Fossil Hominids — UPSC Anthropology Optional Notes

1. Concepts and setting

Australopithecus: meaning southern ape (Latin australis, southern; Greek pithekos, ape), the name given by Raymond Dart in 1925.

Plio-Pleistocene: the Pliocene (about 5.3 to 2.58 million years) and early Pleistocene (from 2.58 million years), a time of cooling and drying with spreading grasslands in Africa.

Phylogenetic status: the place of a fossil on the family tree: whether it is an ancestor of later hominins or a side branch that died out.

Dating: East African sites lie between volcanic layers dated by potassium-argon and argon-argon; South African cave sites are harder to date and use faunal comparison, palaeomagnetism, uranium-lead and cosmogenic nuclides.

2. Earliest hominins (before Australopithecus)

Sahelanthropus tchadensis: the Toumaï cranium from Chad, found by Michel Brunet's team (2001, published 2002), about 7 to 6 million years; small brain (about 360 cc), small canines and a forward foramen magnum suggesting bipedalism (debated).

Orrorin tugenensis: Tugen Hills, Kenya (2000), about 6 million years; femur features suggest bipedalism.

Ardipithecus: Ar. kadabba (about 5.8 to 5.2 million years) and Ar. ramidus (about 4.4 million years) from the Middle Awash, Ethiopia; the partial skeleton Ardi (published by Tim White's team, 2009) combines a grasping big toe with a pelvis adapted for upright walking, in a woodland setting.

3. Gracile australopithecines

A. anamensis: Kanapoi and Allia Bay, Kenya (named by Meave Leakey's team, 1995), about 4.2 to 3.8 million years; tibia shows bipedalism; a nearly complete cranium (MRD) from Woranso-Mille, Ethiopia, was reported in 2019 (about 3.8 million years).

A. afarensis: about 3.9 to 2.9 million years, East Africa; Lucy (AL 288-1), about 40 percent of a skeleton found at Hadar, Ethiopia, by Donald Johanson and Tom Gray in 1974, about 3.2 million years; the First Family (AL 333) with at least 13 individuals; brain about 385 to 550 cc; height about 1 to 1.5 m.

Afarensis features: ape-like skull with prognathic face, U-to-parabolic dental arcade, some diastema, but a bowl-like pelvis, valgus knee and arched foot; long arms and curved fingers suggest some climbing.

Laetoli footprints: Tanzania, about 3.66 million years, discovered by Mary Leakey's team in 1978; they show a human-like stride with an aligned big toe, generally attributed to A. afarensis.

A. africanus: about 3 to 2 million years, South Africa; the Taung child, found in a lime quarry in 1924 and named by Raymond Dart in 1925, has a natural endocast and a forward foramen magnum; Robert Broom found adult specimens at Sterkfontein including Mrs Ples (Sts 5, 1947); brain about 420 to 500 cc.

Other species: A. bahrelghazali (Chad, about 3.5 million years), Kenyanthropus platyops (Kenya, about 3.5 million years, 2001), A. garhi (Ethiopia, about 2.5 million years, 1999, found near cut-marked bones) and A. sediba (Malapa, South Africa, found by Lee Berger's team in 2008, about 1.98 million years, with a mix of Australopithecus and Homo features).

Little Foot (StW 573): a nearly complete skeleton from Sterkfontein recovered by Ron Clarke's team over two decades from 1994; a 2015 dating of about 3.67 million years and its species assignment are debated.

4. Robust australopithecines (Paranthropus)

Common features: sagittal crest (in males), flaring cheekbones, dished face, massive mandible, very large premolars and molars with thick enamel and small front teeth; brain about 450 to 550 cc; adapted to chewing tough or hard plant foods.

P. aethiopicus: the Black Skull (KNM-WT 17000), west Turkana, Kenya, 1985, about 2.5 million years; very prognathic with a large crest and small brain (about 410 cc).

P. boisei: Zinjanthropus boisei, found by Mary Leakey at Olduvai Gorge, Tanzania, in 1959 (OH 5, nicknamed Nutcracker Man), dated by potassium-argon to about 1.75 million years in 1961; the species ranges from about 2.3 to 1.4 million years in East Africa.

P. robustus: Kromdraai (Robert Broom, 1938) and Swartkrans, South Africa, about 2 to 1 million years; bone tools from Swartkrans may have been used for digging termite mounds.

Diet debate: John Robinson's dietary hypothesis held robust forms were vegetarians and gracile forms omnivores; isotope studies show P. boisei ate mostly C4 grasses and sedges, and dental microwear does not show much hard-object feeding, so the nutcracker image is revised.

Makapansgat: Makapansgat (South Africa) yielded A. africanus fossils and Dart's controversial osteodontokeratic (bone, tooth and horn) culture idea, which C.K. Brain's taphonomic work showed was mainly the result of carnivore and porcupine activity.

Hunters or hunted: C.K. Brain's The Hunters or the Hunted? (1981) showed that many australopith bones in South African caves were the prey of leopards and other carnivores; a Swartkrans juvenile skull has two holes matching a leopard's canines.

Tool use: stone tools at Lomekwi 3 (about 3.3 million years) and cut-marked bones at Dikika (about 3.4 million years, debated) suggest that some australopiths used tools before Homo appeared.

Sexual dimorphism: A. afarensis males were much larger than females, which some read as a gorilla-like mating system and others (Lovejoy) as compatible with pair bonding; the debate continues.

5. Early Homo

Homo habilis: named by Louis Leakey, Phillip Tobias and John Napier in 1964 from Olduvai fossils (type specimen OH 7); about 2.4 to 1.4 million years; brain about 510 to 690 cc; smaller molars, more rounded skull; associated with Oldowan tools, hence handy man.

Homo rudolfensis: KNM-ER 1470 from Koobi Fora, east of Lake Turkana (Lake Rudolf), found in 1972 by Richard Leakey's team, about 1.9 million years, brain about 750 cc, long flat face.

Earliest Homo: the Ledi-Geraru mandible (LD 350-1) from Ethiopia, reported in 2015, about 2.8 million years, is the oldest fossil attributed to Homo.

Debate: some (for example Bernard Wood and Mark Collard, 1999) argue habilis and rudolfensis are closer to australopiths and should be removed from Homo; others see them as one variable species.

6. Phylogenetic status and debates

Dart's struggle: Taung was rejected by Arthur Keith and others partly because the Piltdown forgery (exposed in 1953) suggested a large brain came first; Broom's adult finds and later discoveries vindicated Dart.

Johanson and White (1979): proposed A. afarensis as the common ancestor of both the robust line and the Homo line, with A. africanus on the robust side; many textbooks still use this scheme.

Alternative views: others place A. africanus or A. sediba (Berger) as ancestor of Homo; the Black Skull suggests robust forms may have arisen from afarensis directly; whether Paranthropus is a single natural group or a case of parallel evolution is debated.

Bushy tree: the coexistence of several hominin species around 2 to 1.5 million years ago means human evolution was a branching bush, not a single ladder.

Geographical distribution: East Africa (Ethiopia, Kenya, Tanzania), South Africa (Taung, Sterkfontein, Swartkrans, Kromdraai, Makapansgat, Malapa) and Chad in central Africa; no australopith is known outside Africa.

7. Diagrams to draw

Skull comparison: side views of A. africanus (rounded, no crest, moderate face) and P. boisei (sagittal crest, flaring zygomatic arches, dished face, huge molars), labelled.

Phylogenetic tree: a vertical time axis from 7 million years to present; Sahelanthropus, Orrorin, Ardipithecus at the base; A. anamensis to A. afarensis; one branch to Paranthropus (aethiopicus, then boisei and robustus, ending about 1.2 million years); another branch to A. africanus and A. sediba; a third to early Homo; mark uncertain links with dotted lines.

8. Using it in the exam

10 marks (one species or site): discoverer and year, site, date, cranial capacity, three or four key features, phylogenetic status.

20 marks (australopithecines): classification into gracile and robust with a table, distribution map of East and South Africa, skull diagram, phylogenetic tree and the debate on Homo ancestry.

Keywords: bipedal ape, mosaic evolution, gracile and robust, megadontia, sagittal crest, Laetoli, Taung, bushy phylogeny.

1. Concepts and general features

Name: Eugène Dubois named his Java find Pithecanthropus erectus (1894); Ernst Mayr (1950) grouped Pithecanthropus, Sinanthropus and similar fossils into Homo erectus.

Skull: long and low (platycephalic), thick cranial bones, continuous supraorbital torus, marked post-orbital constriction, sagittal keel, angular occipital with an occipital torus, maximum breadth near the base (pentagonal in rear view), no chin.

Brain and teeth: cranial capacity about 750 to 1,250 cc (Dmanisi specimens lower, about 550 to 775 cc); teeth smaller than in H. habilis; shovel-shaped incisors in Peking Man.

Body: essentially modern postcranial skeleton, tall and linear in Africa, with long legs suited to endurance walking and running; thick-walled long bones and a flattened femoral shaft (platymeria).

Time and range: about 1.9 million years in Africa to about 117,000 to 108,000 years at Ngandong, Java (dated 2019); found in Africa, Georgia, Java, China and possibly India.

2. Africa

KNM-ER 3733: Koobi Fora, Kenya (1975), about 1.78 million years, about 850 cc; it coexisted with Paranthropus boisei.

Turkana Boy (KNM-WT 15000): Nariokotome, west Turkana, found by Kamoya Kimeu in 1984; a nearly complete adolescent skeleton about 1.5 to 1.6 million years old with a tall, narrow body; brain about 880 cc.

OH 9: Olduvai Gorge (Louis Leakey, 1960), about 1.4 million years, about 1,060 cc with a massive brow ridge.

North and South Africa: Atlanthropus mauritanicus from Ternifine (Tighennif), Algeria (Camille Arambourg, 1954-55) and Telanthropus capensis from Swartkrans (Broom and Robinson, 1949), both now placed in Homo erectus.

On the syllabus wording 'Africa (Paranthropus)': Paranthropus is a robust australopith, not Homo erectus; the African erectus fossil found among Paranthropus remains at Swartkrans is Telanthropus, which students should mention to show accuracy.

Homo ergaster: some scholars (Groves and Mazák, 1975; Bernard Wood) name early African forms Homo ergaster, keeping Homo erectus for Asian forms with thicker skulls; others treat them as one species (debated).

3. Asia: Java Man (Homo erectus javanicus)

Discovery: Eugène Dubois, a Dutch army surgeon, found a skullcap (1891) and a femur (1892) at Trinil on the Solo river, Java, and named Pithecanthropus erectus in 1894, calling it a missing link.

Features: skullcap of about 900 cc, low and flat with a heavy brow ridge; the femur is modern-looking (its association with the skullcap has been questioned).

Further finds: G.H.R. von Koenigswald recovered more fossils at Sangiran (1936–41); Sangiran fossils range back to about 1.5 million years; the Mojokerto child is about 1.5 to 1.8 million years (debated); Ngandong (Solo Man) skulls are the latest, about 117,000 to 108,000 years.

Trinil shell engraving: a freshwater mussel shell from Dubois's Trinil collection with a zigzag engraving, dated about 540,000 to 430,000 years (2014), suggests early abstract marking by H. erectus.

4. Asia: Peking Man (Homo erectus pekinensis)

Discovery: Zhoukoudian Locality 1, near Beijing; Davidson Black named Sinanthropus pekinensis in 1927 from a single molar; Pei Wenzhong found the first skullcap in 1929; remains of about 40 individuals were recovered.

Loss of the fossils: Franz Weidenreich made detailed casts and descriptions; the original fossils disappeared in 1941 while being shipped for safety during the Second World War.

Features: cranial capacity about 915 to 1,225 cc (average about 1,040 cc), higher vault than Java Man, sagittal keel, thick brow ridge, shovel-shaped incisors, large molars with taurodontism in some.

Date and culture: about 780,000 to 400,000 years (a 2009 cosmogenic study gave about 770,000 years for lower layers); chopper-chopping tools of quartz; fire use claimed from ash layers, but later studies (Weiner and colleagues, 1998) questioned true hearths, so it is debated.

Movius line: Hallam Movius (1948) noted that Acheulian handaxes were rare east of a line through north India, with chopper-chopping tools in East Asia; later finds (for example Bose basin, China) have weakened this contrast.

5. Europe: Homo erectus heidelbergensis and the Narmada hominin

Mauer mandible: found in a sand pit at Mauer near Heidelberg, Germany, in 1907 and named Homo heidelbergensis by Otto Schoetensack (1908); about 609,000 years (dated 2010); a massive chinless jaw with a broad ramus but relatively human-sized teeth.

Status: older textbooks and the UPSC syllabus call it Homo erectus heidelbergensis; most specialists now treat Homo heidelbergensis as a separate Middle Pleistocene species, ancestral to Neanderthals and possibly to Homo sapiens (debated).

Other European finds: Homo antecessor from Gran Dolina, Atapuerca, Spain (about 850,000 years, described 1997); Arago (Tautavel, France, about 450,000 years); Sima de los Huesos, Atapuerca (about 430,000 years), whose nuclear DNA (2016) places it on the early Neanderthal line; Boxgrove (England).

Dmanisi, Georgia: five skulls dated about 1.85 to 1.77 million years, the oldest hominins outside Africa, with small brains (about 550 to 775 cc) and Oldowan-like tools; Skull 5 (described 2013) suggests that early Homo varieties may be one variable species (debated).

Narmada hominin (India): a partial cranium found at Hathnora on the Narmada river, Madhya Pradesh, by Arun Sonakia of the Geological Survey of India in 1982; first called Homo erectus narmadensis, it is now usually regarded as archaic Homo sapiens or Homo heidelbergensis-like; its Middle–Late Pleistocene date is debated.

6. Culture and behaviour

Acheulian tools: handaxes and cleavers from about 1.76 million years (Kokiselei, Kenya); in India, Attirampakkam (Tamil Nadu) has Acheulian tools dated to about 1.5 million years (published 2011).

Fire and diet: probable fire at Wonderwerk Cave (about 1 million years); more meat in the diet; long-distance walking and possibly endurance hunting.

Dispersal: Homo erectus (or earlier Homo) left Africa by about 1.85 million years, the first out-of-Africa movement.

7. Phylogenetic status and debates

Ancestor or side branch: African H. erectus (or ergaster) is widely seen as ancestral to H. heidelbergensis and later humans, while late Asian H. erectus (Java, China) is often viewed as a regional branch that died out.

Multiregional view: Weidenreich, and later Milford Wolpoff, Alan Thorne and Wu Xinzhi (1984), argued that regional erectus populations evolved into modern humans in each region with gene flow (for example shovel incisors in Peking Man and modern East Asians); most genetic evidence favours a recent African origin with some admixture.

Lumpers and splitters: whether ergaster, erectus, georgicus and heidelbergensis are separate species is a classic lumper–splitter debate.

8. Diagrams to draw

Skull side view: a long, low H. erectus skull with brow ridge, receding forehead, sagittal keel, angular occipital torus and no chin, beside a modern globular skull.

Rear view: a pentagonal (tent-shaped) erectus vault with maximum breadth low, beside the modern vault with maximum breadth high and sides parallel.

Distribution map: world outline marking Koobi Fora, Nariokotome, Olduvai, Swartkrans, Ternifine, Dmanisi, Mauer, Hathnora, Zhoukoudian, Trinil, Sangiran and Ngandong.

9. Using it in the exam

10 marks (Java or Peking Man): discoverer and year, site, date, cranial capacity, features, culture and status.

20 marks (Homo erectus): general features, a regional table (Africa, Java, China, Europe, India), skull diagrams, distribution map, and the ergaster and multiregional debates.

Keywords: platycephaly, supraorbital torus, sagittal keel, Acheulian, Movius line, out of Africa I, Homo ergaster.

1. Neanderthals: discovery and general features

Discovery: a child's skull from Engis, Belgium (1829–30) and an adult from Forbes' Quarry, Gibraltar (1848) were not recognised at first; the type specimen came from the Feldhofer cave in the Neander valley near Düsseldorf, Germany, in 1856, and William King named Homo neanderthalensis in 1864.

Skull: large brain (average about 1,500 cc, range about 1,200 to 1,750 cc), long low wide vault, occipital bun (chignon), suprainiac fossa, double-arched brow ridge, mid-facial prognathism, very large nasal opening, retromolar space behind the last molar, no chin.

Teeth: large incisors with heavy wear (teeth used as a third hand) and taurodont molars.

Body: short, stocky and muscular with a barrel chest and short forearms and lower legs, fitting Bergmann's and Allen's rules for cold climates; thick, strongly curved limb bones.

Range and time: Europe, the Levant, Iraq (Shanidar), Uzbekistan (Teshik-Tash) and the Altai (Denisova, Okladnikov caves); early Neanderthal features appear by about 400,000 years (Sima de los Huesos), classic forms about 130,000 to 40,000 years; they disappeared about 41,000 to 39,000 years ago.

Culture: Mousterian (Middle Palaeolithic) tools using the Levallois technique, scrapers and points; deliberate burials (La Ferrassie, Shanidar); care of injured individuals (Shanidar 1 survived severe injuries); use of pigments and eagle-talon ornaments; the Shanidar flower burial is debated.

2. Classic Neanderthal: La Chapelle-aux-Saints

Discovery: a nearly complete skeleton of an older male found in a cave at La Chapelle-aux-Saints, Corrèze, France, in 1908 by the abbés Amédée and Jean Bouyssonie and Louis Bardon, in a dug grave.

Features: cranial capacity about 1,600 cc, very long low skull, massive brow ridge, strong occipital bun, large projecting face, chinless jaw; the classic type of Western Europe during the last glaciation (Würm).

Boule's error: Marcellin Boule (1911–13) reconstructed him as a stooping, bent-kneed brute; William Straus and A.J.E. Cave (1957) showed that the individual had severe arthritis and that Neanderthals walked fully upright.

Other classic sites: La Ferrassie, Le Moustier and La Quina (France), Spy (Belgium), Monte Circeo (Italy).

3. Progressive Neanderthal: Mount Carmel

Discovery: caves of Mount Carmel near Haifa, Israel, excavated by Dorothy Garrod (1929–34); the human remains were described by Theodore McCown and Arthur Keith (1939); the main caves are Tabun and Skhul.

Features of the progressive type: higher, more rounded vault, smaller brow ridges, reduced or absent occipital bun, more vertical forehead and a slight chin, with tall stature; they looked intermediate between classic Neanderthals and modern humans.

Earlier interpretations: McCown and Keith treated the Tabun and Skhul people as one variable population; others suggested hybridisation or a stage evolving towards modern humans.

Modern view: Tabun C1 is a Neanderthal, while Skhul (about 120,000 to 90,000 years) and nearby Qafzeh are early modern Homo sapiens; the Levant was occupied alternately or jointly by both groups; Misliya cave (Mount Carmel) yielded a modern human jaw dated about 194,000 to 177,000 years (2018).

Explaining classic versus progressive: F. Clark Howell and others argued that progressive forms were earlier or more generalised, while classic Western European forms became specialised through isolation and cold selection during the last glaciation.

Other progressive or pre-Neanderthal fossils: Steinheim (Germany, 1933), Swanscombe (England, 1935–36), Krapina (Croatia, 1899) and Ehringsdorf (Germany).

4. Rhodesian Man

Discovery: a cranium found by miner Tom Zwiglaar at the Broken Hill lead and zinc mine, Kabwe, in Northern Rhodesia (now Zambia) in 1921; Arthur Smith Woodward named it Homo rhodesiensis (1921).

Features: cranial capacity about 1,250 to 1,300 cc; among the largest brow ridges of any hominin; long low vault but a more modern occipital region; large face; the teeth show extensive caries and abscesses, among the earliest known.

Date: long thought to be about 125,000 years or older, a 2020 study dated it to about 299,000 years (range about 324,000 to 274,000 years).

Status: once called an African Neanderthal, it is now grouped with Homo heidelbergensis or H. rhodesiensis, along with Bodo (Ethiopia) and Saldanha (Elandsfontein, South Africa); it lived at the same time as Homo naledi and early Homo sapiens, which shows several lineages coexisted in Africa.

5. Homo sapiens: origins

Earliest fossils: Jebel Irhoud, Morocco (about 315,000 years, published 2017, modern face with an elongated braincase); Omo Kibish I, Ethiopia (at least about 233,000 years, revised 2022); Herto, Ethiopia (about 160,000 years, H. sapiens idaltu, 2003).

Modern features: high rounded skull, vertical forehead, small brow ridges, flat face tucked under the braincase, chin, small teeth, average cranial capacity about 1,350 cc, lightly built skeleton.

Recent African origin (Out of Africa): supported by mitochondrial DNA (Cann, Stoneking and Wilson, 1987, the mitochondrial Eve study) and by fossils; modern humans dispersed widely from Africa after about 70,000 to 60,000 years.

Admixture: the Neanderthal genome (2010, Svante Pääbo's team; Pääbo received the 2022 Nobel Prize in Physiology or Medicine) shows that present-day non-Africans carry about 2 percent Neanderthal DNA; Denisovans, known from DNA in a finger bone from Denisova Cave (2010), contributed DNA to Melanesians and others.

Recent finds: Homo naledi (Rising Star cave, South Africa, described 2015, about 335,000 to 236,000 years); Homo floresiensis (Flores, 2004); Homo luzonensis (Philippines, 2019); in 2025 proteins and mitochondrial DNA identified the Harbin cranium from China (about 146,000 years) as Denisovan.

Debate: the multiregional model (Wolpoff, Thorne, Wu Xinzhi) versus replacement (Christopher Stringer); most scholars now accept a mainly African origin with limited interbreeding (assimilation model, Fred Smith).

6. Early modern humans of Europe: Cro-Magnon, Grimaldi, Chancelade

Cro-Magnon: the Abri de Cro-Magnon rock shelter at Les Eyzies, Dordogne, France, exposed during railway work in 1868 and excavated by Louis Lartet; remains of about five individuals including the Old Man (Cro-Magnon 1); dated to about 28,000 radiocarbon years (Gravettian period), though long linked with the Aurignacian.

Cro-Magnon features: tall (about 170 to 180 cm), cranial capacity about 1,600 cc, long (dolichocephalic) high skull, vertical forehead, broad short face with low rectangular orbits (a disharmonic combination with the long skull), narrow nose, prominent chin.

Cro-Magnon culture: Upper Palaeolithic blade and burin tools, bone and antler points, needles, ornaments, Venus figurines and cave art such as Lascaux (about 17,000 years) and Chauvet (over 30,000 years), made by these early European modern humans.

Grimaldi: the Grotte des Enfants (Children's Cave) in the Balzi Rossi caves at Grimaldi, Liguria, Italy, near Menton on the French border, excavated 1901–1906 by Canon de Villeneuve; a double burial of an older woman and an adolescent boy with shell ornaments, Upper Palaeolithic (Gravettian).

Grimaldi features and the race claim: René Verneau (1906) described them as a distinct negroid race because of prognathism, a wide nose and long forearms; later study showed that the features fall within the range of Upper Palaeolithic Europeans and the skulls had been partly mis-reconstructed, so the racial label is rejected.

Chancelade: a crouched burial found in 1888 in the Raymonden rock shelter at Chancelade near Périgueux, Dordogne, France; Magdalenian period (late Upper Palaeolithic).

Chancelade features and the Eskimo claim: a short male (about 155 to 160 cm) with a large brain (often given as about 1,700 cc), long high skull, broad face, high cheekbones and strong jaw; Léo Testut (1889) linked him with the Eskimo (Inuit), an idea now rejected; he is seen as part of the normal variation of Magdalenian Europeans.

Lesson from the three: Cro-Magnon, Grimaldi and Chancelade were once treated as three races (European, African, Mongoloid) in Europe; today they show the wide variation within one population of early modern humans, a caution against typological race thinking.

7. Diagrams to draw

Neanderthal versus modern skull: side views; Neanderthal: long low vault, occipital bun, double-arched brow, mid-facial projection, retromolar space, no chin; modern: high round vault, vertical forehead, flat face, chin.

Models of modern human origins: three panels; replacement (single African branch spreading and replacing others), multiregional (parallel regional lines joined by gene-flow lines), assimilation (African branch spreading with thin lines of interbreeding).

8. Using it in the exam

10 marks (Cro-Magnon, Grimaldi or Chancelade): site, year, discoverer, period, physical features, culture, and the modern view of the race claims.

15 to 20 marks (Neanderthals): general features, classic versus progressive table, Mount Carmel reinterpretation, culture, genome evidence and the debate on their fate.

Keywords: occipital bun, retromolar space, Mousterian, Levallois, classic and progressive, admixture, Out of Africa, disharmonic face.

1. Australopithecines and Plio-Pleistocene Hominids

Example 1 (UPSC 2026, 20 marks): Discuss the phylogenetic status, characteristic features, geographical distribution and lifeways of Paranthropus.

Paper and question: Paper I, Q4(a)

Approach: Four demands: phylogenetic status, features, distribution and lifeways of the robust australopiths; organise species-wise, add a robust-versus-gracile skull diagram and end with the debate on whether Paranthropus is a natural group.

Paranthropus (beside man) is the genus of robust australopithecines, named by Robert Broom in 1938 for a skull from Kromdraai, South Africa; it lived about 2.7 to 1.2 million years ago.

Species: P. aethiopicus, the Black Skull (KNM-WT 17000, west Turkana, 1985, about 2.5 million years, brain about 410 cc); P. boisei, Zinjanthropus or Nutcracker Man (OH 5), found by Mary Leakey at Olduvai Gorge in 1959, about 1.75 million years, the species spanning about 2.3 to 1.4 million years; P. robustus from Kromdraai and Swartkrans, about 2 to 1 million years.

Characteristic features: sagittal crest in males, flaring cheekbones and a dished face, a massive mandible, molarised premolars and very large molars with thick enamel (megadontia) but small incisors and canines; brain about 410 to 550 cc; fully bipedal, with marked sexual dimorphism.

Geographical distribution: only Africa; in East Africa at Omo and Konso (Ethiopia), west Turkana and Koobi Fora (Kenya), Olduvai and Peninj (Tanzania) and Malawi; in South Africa at Kromdraai, Swartkrans and Drimolen.

Lifeways: John Robinson's dietary hypothesis made them vegetarians; carbon isotopes show P. boisei ate mostly C4 grasses and sedges and P. robustus a mixed diet, and microwear shows little nut cracking; worn bone tools from Swartkrans may be theirs; many fell prey to leopards (C.K. Brain).

Diagram: side views of P. boisei (sagittal crest, flaring zygomatic arch, dished face, huge molars) beside A. africanus (rounded vault, no crest, smaller face), with a small tree showing Paranthropus as a side branch.

Phylogenetic status: Paranthropus coexisted with early Homo and H. erectus and died out about 1.2 million years ago without descendants, a side branch; Johanson and White (1979) derived it from A. afarensis, but whether the robust species form one natural group or evolved robusticity in parallel is debated.

Paranthropus thus shows human evolution as a bush, and its extinction as tool-using Homo spread shows the cost of dietary specialisation.

Example 2 (UPSC 2025, 10 marks): Osteodontokeratik culture and its makers.

Paper and question: Paper I, Q1(c)

Approach: A short note: define the osteodontokeratic culture, give Dart's evidence from Makapansgat, then the taphonomic critique of C.K. Brain and the present view of its makers.

The osteodontokeratic culture (bone, tooth and horn) is the tool tradition Raymond Dart attributed to Australopithecus africanus, set out in his 1957 monograph on the Makapansgat Limeworks cave.

Dart's evidence: among thousands of animal bones there, antelope jaws, horn cores and limb ends were over-represented; he read jaws as cutting tools, horns as daggers and humerus ends as clubs, and linked depressed fractures on baboon skulls to blows from such clubs.

Its makers: for Dart the australopiths were hunting, killer apes, an image Robert Ardrey popularised in African Genesis (1961).

Critique: C.K. Brain's taphonomic work, The Hunters or the Hunted? (1981), showed that the bone selection matched the leftovers of leopards, hyenas and porcupines; a Swartkrans child's skull bears punctures matching a leopard's canines, so australopiths were often the prey.

The culture is now rejected as a hunting kit, though worn bone tools from Swartkrans, used to dig termite mounds by Paranthropus robustus or early Homo, show that some bone use occurred.

Example 3 (UPSC 2023, 20 marks): Discuss major species of Australopithecus discovered from South and East Africa. Describe the discovery, physical features and significance of Taung baby.

Paper and question: Paper I, Q2(a)

Approach: Two parts: the main Australopithecus species of South and East Africa (a regional survey with sites and dates), then the Taung child's discovery, features and significance; add a distribution map.

Australopithecus (southern ape) comprises bipedal, small-brained African hominins of about 4.2 to 2 million years ago, with an ape-like skull but a human-like pelvis and legs.

East Africa: A. anamensis (Kanapoi, Kenya, Meave Leakey's team, 1995, about 4.2 to 3.8 million years); A. afarensis, with Lucy (AL 288-1, Hadar, Ethiopia, Johanson and Gray, 1974, about 3.2 million years), the First Family and the Laetoli footprints (about 3.66 million years); and A. garhi (Bouri, Ethiopia, 1999, about 2.5 million years).

South Africa: A. africanus from Taung, Sterkfontein (Mrs Ples, found by Robert Broom in 1947) and Makapansgat, about 3 to 2 million years; A. sediba from Malapa (Lee Berger's team, 2008, about 1.98 million years), mixing Australopithecus and Homo traits.

Diagram: outline map of Africa marking Hadar, Laetoli, Kanapoi and Koro Toro (Chad, A. bahrelghazali) in the east and centre, and Taung, Sterkfontein, Makapansgat and Malapa in the south.

Taung baby, discovery: in 1924 quarrymen at the Buxton limeworks near Taung found a fossil skull that reached Raymond Dart of the University of the Witwatersrand; he named Australopithecus africanus in Nature in February 1925.

Features: a child of about three years with milk teeth and erupting first permanent molars; a natural endocast of about 400 cc; a forward foramen magnum showing upright posture; small canines, no simian shelf and a less projecting face; about 2.8 to 2.5 million years (uncertain); eye-socket damage suggests an eagle killed it (Berger and McGraw, 2006).

Significance: the first australopith found, it supported Darwin's view (1871) of an African origin and showed that bipedalism preceded brain enlargement; Arthur Keith and others rejected it, partly because the Piltdown forgery suggested the opposite, but Broom's adult finds and the exposure of Piltdown in 1953 vindicated Dart.

These species show a bushy African radiation from which Homo and Paranthropus later branched.

Example 4 (UPSC 2019, 10 marks): Olduvai Gorge

Paper and question: Paper I, Q5(c)

Approach: A short note on a site: location and geology, the history of research by the Leakeys, the key fossils and tool industries, and why the site matters.

Olduvai Gorge is a ravine about 48 km long on the edge of the Serengeti plain in northern Tanzania, cutting through lake and volcanic deposits of roughly the last 2 million years.

Research: Louis and Mary Leakey worked there from 1931; the sequence is divided into Beds I to IV and above, and its volcanic tuffs gave the first potassium-argon date for a hominin site (1961).

Fossils: Zinjanthropus boisei (OH 5, now Paranthropus boisei), found by Mary Leakey in 1959, about 1.75 million years; Homo habilis (type specimen OH 7, named by Leakey, Tobias and Napier in 1964); and OH 9, a Homo erectus skull of about 1,060 cc from Bed II.

Tools: the Oldowan industry of choppers and flakes is named after the gorge (Bed I), followed by the Developed Oldowan and Acheulian handaxes higher up.

Olduvai thus records robust australopiths, early Homo and H. erectus side by side and the Oldowan-to-Acheulian shift in one sequence.

2. Homo erectus

Example 5 (UPSC 2024, 20 marks): Discuss the geographical distribution of Homo erectus. Taking into account its physical features, where does it fit in human evolutionary line?

Paper and question: Paper I, Q6(a)

Approach: Two demands: the distribution of Homo erectus region by region, and, from its physical features, its place in the human line; draw a world distribution map and end with the ancestor-versus-side-branch debate.

Homo erectus, first named by Eugène Dubois as Pithecanthropus erectus (1894), was the first hominin to live outside Africa, from about 1.9 million to about 110,000 years ago.

Africa: KNM-ER 3733 (Koobi Fora, about 1.78 million years), the Turkana Boy (Nariokotome, 1984, about 1.5 million years), OH 9 (Olduvai) and Ternifine (Algeria); many call the early African forms Homo ergaster.

Asia: Dmanisi in Georgia (about 1.85 to 1.77 million years, the oldest outside Africa); Java Man from Trinil (Dubois, 1891), Sangiran (von Koenigswald) and the late Ngandong skulls (about 117,000 to 108,000 years); Peking Man from Zhoukoudian (Davidson Black, 1927; about 780,000 to 400,000 years) in China; the Narmada cranium from Hathnora (Arun Sonakia, 1982), first called H. erectus narmadensis, is now usually seen as archaic H. sapiens.

Europe: the Mauer jaw (1907), called H. erectus heidelbergensis in the syllabus, is now usually placed in Homo heidelbergensis.

Diagram: world map marking Koobi Fora, Nariokotome, Olduvai, Ternifine, Dmanisi, Hathnora, Zhoukoudian, Trinil, Sangiran and Ngandong, with an arrow out of Africa about 1.85 million years ago.

Physical features: long, low, thick-walled skull with a continuous brow ridge, sagittal keel, angular occipital torus and widest point near the base; no chin; brain about 750 to 1,250 cc; smaller teeth than H. habilis; a tall, essentially modern body built for long-distance walking.

Position in the line: these features are intermediate between H. habilis and later humans, so African H. erectus (or ergaster) is widely regarded as ancestral to H. heidelbergensis and through it to Neanderthals and H. sapiens; late Javanese and Chinese populations were probably a regional branch that died out.

Multiregionalists (Weidenreich; Wolpoff, Thorne and Wu Xinzhi, 1984) linked Peking Man to modern East Asians, but genetics favours a recent African origin, so H. erectus is best seen as a stem species with an extinct Asian offshoot.

Example 6 (UPSC 2021, 20 marks): What are the physical and cultural characteristics of Homo erectus ? Discuss its phylogenetic status.

Paper and question: Paper I, Q2(a)

Approach: Three demands: physical characteristics, cultural characteristics and phylogenetic status; use sub-headings, a skull comparison diagram, and end with the ergaster and multiregional debates.

Homo erectus (upright man) lived from about 1.9 million to about 110,000 years ago in Africa, Georgia, Java and China; Dubois's Java Man (1891), Peking Man (1927) and the Turkana Boy (1984) are its best-known fossils.

Physical, skull: long, low (platycephalic) and thick-walled vault, continuous supraorbital torus, marked post-orbital constriction, sagittal keel, angular occipital with an occipital torus, widest near the base (pentagonal rear view), receding forehead and no chin.

Physical, brain, teeth and body: cranial capacity about 750 to 1,250 cc (average near 1,000 cc); teeth smaller than in H. habilis, with shovel-shaped incisors in Peking Man; a tall, linear, modern-looking body with thick long bones and a flattened femur shaft.

Diagram: side and rear views of an H. erectus skull (long low vault, brow ridge, keel, occipital torus, pentagonal outline) beside a modern globular skull with a vertical forehead and chin.

Cultural characteristics: the Acheulian handaxe and cleaver from about 1.76 million years (Kokiselei, Kenya; Attirampakkam, India), while East Asia kept chopper-chopping tools (Movius line); probable fire at Wonderwerk Cave (about 1 million years) and debated hearths at Zhoukoudian; more meat, possibly by hunting and scavenging; the first dispersal out of Africa by about 1.85 million years.

Phylogenetic status: the dominant view treats African H. erectus (H. ergaster for Groves and Mazák, 1975, and Bernard Wood) as ancestral to H. heidelbergensis and later humans, while late Asian H. erectus (Ngandong) was a side branch that died out.

Debates: splitters separate ergaster, erectus and georgicus, while Dmanisi Skull 5 (2013) suggests one variable species; multiregionalists (Wolpoff, Thorne, Wu Xinzhi) saw regional erectus populations evolving into modern humans, but genetic evidence favours a recent African origin with limited admixture.

H. erectus thus marks the shift to a human body plan, larger brain, planned tools and fire, and stands as the stem from which later Homo evolved.

Example 7 (UPSC 2018, 15 marks): Describe the culture related to Homo erectus.

Paper and question: Paper I, Q4(b)

Approach: Only culture is asked: describe tools (Acheulian and chopper-chopping), fire, subsistence, shelter, dispersal and symbolic hints with sites and dates, and end with what they show about cognition.

The culture of Homo erectus belongs to the Lower Palaeolithic, from about 1.8 million to a few hundred thousand years ago, known from stone tools, butchered bones and traces of fire.

Tools: early H. erectus used Oldowan-like choppers and flakes (Dmanisi), and from about 1.76 million years (Kokiselei, Kenya; Konso, Ethiopia) made the Acheulian handaxe and cleaver, bifaces shaped symmetrically to a mental template; in India Acheulian tools occur at Attirampakkam (about 1.5 million years), Isampur and the Hunsgi valley; in East Asia, as at Zhoukoudian, chopper-chopping tools and quartz flakes dominate, the contrast of Hallam Movius's line (1948), now weakened by handaxes from the Bose basin, China.

Fire: burnt bone and plant ash at Wonderwerk Cave, South Africa (about 1 million years), is accepted as evidence of fire; Gesher Benot Ya'aqov in Israel (about 780,000 years) had repeated hearths; the Zhoukoudian ash layers are debated.

Subsistence and dispersal: cut-marked bones show more meat, by hunting and scavenging; this flexible culture helped the first spread out of Africa into Georgia, Java and China.

Symbolic hints: a freshwater shell from Trinil engraved with a zigzag (about 540,000 to 430,000 years) suggests the beginnings of abstract marking.

Thus the culture of H. erectus shows planning, standardised tool-making, control of fire and wide adaptation, the base on which later Middle Palaeolithic culture was built.

Example 8 (UPSC 2015, 20 marks): Describe the salient characteristics and geographical distribution of Homo erectus.

Paper and question: Paper I, Q6(a)

Approach: Two demands: salient characteristics (skull, brain, teeth, body, culture) and geographical distribution (Africa, Asia, Europe, India); include a skull diagram and a regional summary, and close with its evolutionary place.

Homo erectus is the Pleistocene hominin species, about 1.9 million to 110,000 years old, that first combined a near-modern body with a brain of about 1,000 cc and was the first to spread beyond Africa.

Salient skull features: long, low, thick-boned vault (platycephaly), heavy continuous brow ridge, post-orbital constriction, sagittal keel, angular occipital torus, maximum breadth low on the skull, receding forehead, projecting face and no chin; cranial capacity about 750 to 1,250 cc.

Teeth and body: smaller molars than H. habilis, shovel-shaped incisors (Peking Man); a tall, narrow body with long legs, as in the Turkana Boy, suited to endurance walking in open country; thick long bones.

Diagram: labelled side view of an H. erectus skull (supraorbital torus, receding frontal, keel, occipital torus, no chin) beside a modern skull.

Africa: Koobi Fora (KNM-ER 3733, about 1.78 million years), Nariokotome (Turkana Boy, 1984), Olduvai (OH 9), Ternifine in Algeria (Atlanthropus) and Swartkrans (Telanthropus).

Asia: Dmanisi, Georgia (about 1.85 to 1.77 million years); Java at Trinil (Dubois, 1891), Sangiran and Ngandong; China at Zhoukoudian (Peking Man, about 780,000 to 400,000 years), Lantian and Hexian; in India the Hathnora (Narmada) cranium of 1982 was first assigned to H. erectus but is now usually called archaic H. sapiens.

Europe: the Mauer mandible (1907), the syllabus's H. erectus heidelbergensis, now usually H. heidelbergensis; Homo antecessor from Atapuerca (about 850,000 years) is a related early European form.

Culture and place: Acheulian handaxes in Africa, India and Europe, chopper-chopping tools in East Asia, and use of fire; African H. erectus is widely seen as the ancestor of later Homo, while late Asian populations formed a branch that died out.

Example 9 (UPSC 2014, 10 marks): Asian Homo erectus

Paper and question: Paper I, Q5(d)

Approach: A short note: the Asian finds (Java, China, Georgia) with discoverers, dates and features, then their distinctive traits and phylogenetic status.

Asian Homo erectus refers to the populations of the species in Java, China and western Asia from about 1.8 million to about 110,000 years ago.

Java Man: Eugène Dubois found a skullcap (about 900 cc) and a femur at Trinil in 1891–92 and named Pithecanthropus erectus (1894); von Koenigswald added Sangiran fossils (1936–41); the Ngandong (Solo) skulls, about 117,000 to 108,000 years, are the last known H. erectus.

Peking Man: Zhoukoudian near Beijing; Davidson Black named Sinanthropus pekinensis (1927); about 40 individuals, average about 1,040 cc, about 780,000 to 400,000 years; the originals were lost in 1941 and survive as Weidenreich's casts.

Western Asia: Dmanisi, Georgia, about 1.85 to 1.77 million years, with brains of about 550 to 775 cc.

Traits and status: thicker cranial walls, a stronger sagittal keel and brow ridge than African forms, and shovel-shaped incisors; chopper-chopping tools east of the Movius line; most see late Asian H. erectus as an extinct branch, though multiregionalists (Weidenreich, Wolpoff) linked it to modern East Asians.

3. Neanderthal Man, Rhodesian Man and Homo sapiens

Example 10 (UPSC 2025, 10 marks): Mitochondrial DNA and human evolution.

Paper and question: Paper I, Q5(d)

Approach: A short note: why mtDNA suits evolutionary study, the 1987 mitochondrial Eve study and its critique, what ancient mtDNA showed, and its limits.

Mitochondrial DNA is a small circular genome (about 16,569 base pairs) inherited only through the mother, without recombination and with a fast mutation rate, so it works as a molecular clock of maternal lines.

Mitochondrial Eve: Cann, Stoneking and Wilson (1987) compared mtDNA samples and found the deepest branches in Africans, tracing all lines to an African woman of about 200,000 years ago; she was not the only woman alive, only the one whose maternal line survives; its tree method was criticised, but later whole-mitogenome studies confirmed the African root.

Dispersal and ancient DNA: African haplogroups (L) contrast with M and N, carried out of Africa about 60,000 to 70,000 years ago; ancient M lineages of the Andaman Islanders support a coastal route (Thangaraj and colleagues, 2005); Neanderthal mtDNA (1997) lies outside modern variation.

Limits: it is a single maternal locus, so nuclear genomes later revealed about 1 to 2 percent Neanderthal ancestry in non-Africans that mtDNA had missed; it must be read with Y-chromosome and genomic data.

Example 11 (UPSC 2025, 15 marks): Critically discuss the centrality of the African continent in the narrative of human evolution.

Paper and question: Paper I, Q7(c)

Approach: "Critically discuss" needs both sides: fossil, archaeological and genetic evidence for Africa's centrality, then the finds outside Africa and the admixture that complicate a purely African story; conclude with a balanced view.

Darwin (1871) predicted an African origin for humans because our closest relatives live there, and Raymond Dart's Taung child (1925) began a century of finds that made Africa central to the human story.

Fossils: every hominin older than about 2 million years is African, from Sahelanthropus (Chad, about 7 to 6 million years) through the australopiths to the earliest Homo (Ledi-Geraru, about 2.8 million years); the oldest H. sapiens are also African (Jebel Irhoud, about 315,000 years; Omo Kibish; Herto).

Archaeology and genetics: the oldest tools (Lomekwi 3, about 3.3 million years), the Acheulian and early symbols such as the engraved ochre of Blombos Cave are African; Africans hold the greatest genetic diversity and the deepest mtDNA and Y roots, and diversity falls with distance from Africa (serial founder effect).

Critique: Dmanisi (about 1.8 million years) and tools at Shangchen, China (about 2.1 million years) show very early exits; Asia had its own lineages (H. floresiensis, H. luzonensis, Denisovans); non-Africans carry about 1 to 2 percent Neanderthal DNA, so the story is not pure replacement; and Scerri and colleagues (2018) argue that H. sapiens arose across many linked African regions, not one cradle.

On balance Africa remains the main stage for the origin of hominins, Homo and modern humans, while Eurasia added later chapters through dispersal, local lineages and interbreeding.

Example 12 (UPSC 2022, 15 marks): Should we still distinguish between 'classic' and 'progressive' Neanderthals ? Discuss the controversy surrounding Neanderthal's position in human evolution.

Paper and question: Paper I, Q3(c)

Approach: Two parts: whether the classic-progressive distinction is still useful (describe both, then the modern reinterpretation of Mount Carmel), and the controversy over Neanderthal's place (side branch, ancestor or subspecies, with genetic evidence).

Classic Neanderthals of glacial Western Europe, typified by La Chapelle-aux-Saints (1908), had long low skulls of about 1,600 cc, massive brows, an occipital bun and no chin; progressive Neanderthals, typified by Mount Carmel (Tabun and Skhul, excavated by Dorothy Garrod, 1929–34), had higher vaults, smaller brows and a slight chin.

Older explanation: F. Clark Howell and others held that generalised early forms evolved towards modern humans in the Near East, while classic forms became specialised through isolation and cold in Europe.

Why the distinction has weakened: Skhul and Qafzeh (about 120,000 to 90,000 years) are now early modern H. sapiens, while Tabun C1 is a Neanderthal, so the progressive group mixed two species; the remaining differences reflect time and region (pre-Neanderthals such as Sima de los Huesos versus later classic forms), so the labels survive mainly as history.

Controversy over position: Hrdlička (1927) saw a Neanderthal phase in all human ancestry; Boule's stooping reconstruction made them a brutish side branch, corrected by Straus and Cave (1957); they are classed either as H. sapiens neanderthalensis or as H. neanderthalensis.

Genetics: their mtDNA (1997) lies outside modern variation, but the nuclear genome (2010, Pääbo's team) shows about 1 to 2 percent Neanderthal DNA in non-Africans; they were thus a distinct but interfertile sister lineage that vanished about 40,000 years ago and left some genes in us.

Example 13 (UPSC 2020, 20 marks): Critically evaluate the contesting theories of the emergence and dispersal of modern Homo Sapiens.

Paper and question: Paper I, Q2(a)

Approach: "Critically evaluate" the contesting models: multiregional, recent African origin (replacement), and the assimilation and hybridisation models, each with its fossil and genetic evidence and weaknesses; add the dispersal routes and a three-panel diagram, and give a verdict.

Anatomically modern Homo sapiens appears first in Africa, at Jebel Irhoud (about 315,000 years), Omo Kibish and Herto; how it arose and spread is explained by contesting models.

Multiregional model: developed from Franz Weidenreich and stated by Milford Wolpoff, Wu Xinzhi and Alan Thorne (1984), it holds that H. erectus populations in Africa, Asia and Europe evolved into modern humans together, linked by gene flow; it cites regional continuity, such as shovel incisors from Peking Man to modern East Asians; but genetic data do not show the deep regional roots it predicts.

Recent African origin (replacement): Christopher Stringer and Peter Andrews (1988), backed by the mitochondrial Eve study (1987), argue that modern humans arose in Africa about 200,000 years ago and replaced archaic groups elsewhere; evidence includes the earliest modern fossils in Africa, the greatest African genetic diversity, and Neanderthal mtDNA outside modern variation.

Intermediate models: Günter Bräuer's hybridisation and replacement model and Fred Smith's assimilation model accept an African origin with some interbreeding, now confirmed by about 1 to 2 percent Neanderthal DNA in non-Africans and Denisovan DNA in Melanesians.

Diagram: three panels with time running upward: replacement (one African branch spreading and cutting off regional lines), multiregional (parallel regional lines joined by cross-links) and assimilation (an African branch spreading with thin side-links of interbreeding).

Dispersal: early exits reached the Levant (Misliya, about 180,000 years; Skhul and Qafzeh, about 120,000 to 90,000 years) but faded; the main dispersal after about 70,000 to 60,000 years took a southern coastal route via the Bab-el-Mandeb and India to Australia (by about 50,000 years or earlier) and a northern route into Europe (about 45,000 years); Andamanese mtDNA fits the coastal route.

Evaluation: pure multiregionalism fails the genetic test and pure replacement fails the admixture test; the consensus is a mainly African origin with limited interbreeding, with Scerri and colleagues (2018) adding that the African origin itself spanned linked regions.

Example 14 (UPSC 2019, 15 marks): "Europeans are closer to Neanderthals." Critically discuss in view of the African origin of humankind.

Paper and question: Paper I, Q3(b)

Approach: "Critically discuss" the claim: set out the morphological and genetic basis for it, show what genomes actually reveal (similar or higher Neanderthal share in East Asians), and reconcile it with the African origin.

Neanderthals lived in Europe and western Asia until about 40,000 years ago, while modern humans arose in Africa (Jebel Irhoud, about 315,000 years) and entered Europe about 45,000 years ago; the claim is that Europeans are specially related to Neanderthals.

Basis of the claim: multiregionalists (Frayer, Wolpoff) saw continuity in early European features, Trinkaus read the Lagar Velho child (Portugal, 1998) as a hybrid, and in 2010 Svante Pääbo's team found that Neanderthals share more variants with non-Africans than with Africans.

What genomes show: Europeans, South Asians, East Asians and Papuans all carry about 1 to 2 percent Neanderthal admixture, from interbreeding probably in western Asia soon after the exit from Africa; East Asians have slightly more than Europeans, so Europeans are not uniquely closer; Oase 1 (Romania, about 40,000 years) had a Neanderthal ancestor four to six generations back, but left no clear descendants.

Reconciling with African origin: about 98 percent of a European genome traces to the African dispersal, and no Neanderthal mtDNA or Y chromosome survives today; the Neanderthal share is a small addition, not a separate origin.

Hence the statement holds only in the limited sense that all non-Africans carry some Neanderthal genes; it supports a recent African origin with minor interbreeding rather than regional continuity.

Example 15 (UPSC 2016, 10 marks): Rhodesian Man

Paper and question: Paper I, Q5(b)

Approach: A short note on a fossil: discovery, features, the revised date and its taxonomic status.

Rhodesian Man (Kabwe 1) is a nearly complete cranium found by the miner Tom Zwiglaar in 1921 at the Broken Hill mine, Kabwe, Northern Rhodesia (now Zambia); Arthur Smith Woodward named it Homo rhodesiensis the same year.

Features: cranial capacity about 1,250 to 1,300 cc; among the heaviest brow ridges of any hominin; a long, low vault with a receding forehead but a more modern occipital region; a large face; the teeth show extensive caries and abscesses, among the earliest known.

Date: once thought about 125,000 years old, it was dated in 2020 (Grün and colleagues) to about 299,000 years.

Status: once called an African Neanderthal, it is now grouped with Homo heidelbergensis or kept as H. rhodesiensis, along with Bodo (Ethiopia) and Saldanha (South Africa), a group many place near the ancestry of H. sapiens.

Its new date makes it a contemporary of Homo naledi and the early H. sapiens of Jebel Irhoud, showing that several human lineages coexisted in Middle Pleistocene Africa.