Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin Time MYA 7-6 Biochro. Locations Features Found Described Brain Size TorosMenalla, Chad 2001 6-5.7 PotasArgon Tugen Hills, Lukeino, Kenya Ardipithecus kadabba 5.8-5.2 Alaya/M. Awash Ethiopia Michael Brunet 2001 Brigitte Senut & Martin Pickford Yohannes HaileSelassie 2001 300-370 cc Orrorin tugenensis Cranium, 2 mand.; no PC bones Molar, thick enamel, apelike Ardipithecus ramidus 5.7-4.3 Aramis, Gona & Middle Awash, Ethiopia Sahelanthropus tchadensis Australopithecus anamensis 4.3-3.9 E. Turkana, Allia Bay, & Kanapoi, & M. Awash Kenya Australopithecus afarensis 3.7-2.8 radiome tric Hadar, Ethiopia; Laetoli, Tanz. Australopithecus bahrelghazli (= afarensis) 3.5-3.0 Bahr el Ghazal, Koro Toro, Chad Mandibles, teeth, PC bones; large canines Partial skeleton, teeth, cranium underside, jaws, limbs Larger canines Co-exist Type Specimen 2001 TM 266-01-060-1 2001 BAR1000’00 2004 ALA-VP-2/10 Tim White, Berhane Asfaw, Gen Suwa 1994 ARA-VP-6/1 1994 1965 Patterson Maeve Leakey, 1995 KNM-KP 29281 Feibel and Ian McDougall Skull, some skeleton, crania, lower jaws, limbs 1974 Lucy 1993 1995 Don Johanson 1978 Michael Brunet 1997 (446) 387-550 cc 1978 LH 4 mandible 1997 KT 12/H1 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin Kenyanthropus platyops (flat face) Australopithecus africanus Time 3.5-3.2 Argon Locations W. Turkana, Ethiopia Features Small ear hole; thick enamel 1st African Hominin fossil Found Described 1999 Justus Maeve Erus Leakey 2001 1924 Raymond Dart 1925 Brain Size 400-560 cc 3-2.4 Gladysvale, Makapansgar, Sterkfontein, Taung, S. Africa Australopithecus garhi 2.5 Bouri, M. Awash, W. Turkana, Ethiopia Paranthropus aethiopicus 2.7-2.3 W. Turkana, Omo, Ethiopia Australopithecus sediba 1.981.78 Malapa, South Africa Precision grip; modern ankle; primitive heel; asym. brain hem. Paranthropus boisei 2.31.2/.7 Koobi Fora, E. Turkana, Kenya; Omo, Ethiopia; Oldovai, Tanz. Large jaws, molars, sagittal crest B. Wood: meat Co-exist Type Specimen 2001 KNM-WT 40000 (461) 400-560 cc 1925 Taung 1 cranium Long legs, large molars 1999 Berhane Asfaw 1999 450 cc 1999 BOU-VP-12/130 Camille Arambourg & Yves Coppens 1968 410 cc 1968 Omo 18.18 Matthew Berger 2008 Lee Berger, DeRuiter 201-0 420-450 cc Mary Leakey 1959 Louis Leakey (530) 430-545 cc 1959 OH 5 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin Time Location Paranthropus robustus 2.0-1.0 Swartkraus; all South AF Homo habilis 2.4-1.6 Oldovai, E. Turkana, Koobi For a, Kenya Teeth, craniums, hand bones, left foot Homo rudolfensis 2.4-1.8 = Homo habilis Homo gautengensis 1.9-.6 Olduvai, E. Turkana, Koobi Fora Sterkfontein, S. Africa Homo ergaster 1.8-1.5 W. Turkana, Koobi Fora, Kenya = early African Homo erectus Colin Groves & Vratislav Mazak 871 cc 1975 KNM-ER 992 Homo erectus 1.9-50T Dmanisi, Georgia; E. Africa; Java; Trinil, Indonesia Dmanisi, Georgia W. Turkana Teeth, femur, 1890/1 skullcap; Out of Africa 2M Eugene Dubois 870 cc (730-1250 cc) 1894 Trinil 2 calotte 1.7-1.8 Features Found 1964, Leakey Described Brain Size Robert Broom 1938 (521) 530 or 476 cc 1938 TM 1517 Louis Leakey 1964 630 cc (510-750) 1964 OH 7 Valery Alexeev 752 cc 1986 KNM-ER 1470 Curnoe 2010 Oldowan tools Almost complete skeleton = Turkana Boy KNM-WT 15000 Co-exist Type Specimen Stw 53 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin (Sinanthropus pekinensis)( = Homo erectus) Time Location Features Found 1927 Described Davidson Black Brain Size Homo heidelbergensis 880250T (.6-.1) Mauer, Germany; Boxgrove, England; Bodo, Ethiopia; Kabwe, Zambia Larger brain 1908 Schoetensack 1270 cc Homo antecessor 780T (.7-.5) Gran Dolina, Atapuerca, Spain Homo neanderthalis 200T30T (.2.03); 400500T in Spain Kleine Feldhofer, Germany; sites in Europe, Near East, Asia Also Engis, Belgium Forbes’ Quarry, Gibraltar 1908 Co-exist 1908 Mauer 1 mandible Jose-Maria Bermudez de Castro 1-4% DNA in Europeans/ Asians 1856 1824 1848 1864, King Type Specimen 1927 Zhoukoudian (Choukoutien) teeth 1997 ATD 6-5 1420 cc H. sapiens Neanderthal 1 calotte (Kleine Feldhofer skeleton); 40KYA Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin Time Location Features Found Homo sapiens 200T(.2present) Cro-Magnon, Les Eyzies, France; many sites Brain size, globe skull, art, only survivor; In Europe, 45 TYA 1st fossil of H. sapiens 1868 Also Paviland, Gower Peninsula, Wales Described Brain Size Co-exist 1350 cc H. neand. Type Specimen 1822/3 Homo floresiensis <38T18T (.095.018) Liang Bua, Island of Flores, Indonesia 100 specimens/ 14 individuals 2003 Peter Brown 2005 Denisovans 41-50T Denisovia, Siberia Finger bone, molar, toe bone 5% DNA in New Guineans, Aborigines, Melanesia 2008 Maria Mednikova 2010 David Reich 400cc 2005 LB 1 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominid Sahelanthropus tchadensis Orrorin tugenensis Teeth Small canines worn at tip; thick enamel Thick enamel, Large canines Mandible Leg Fingers & Arms thick Brow bridge Massive bb, moder. prognathi c face outer/ cortical bone is thickest at top and bottom of neck Curved fingers Face & Chin Pelvis Notable Height Weight Toumai skull; small braincase and widely spaced eye sockets Chimp size Origin in forested habitat Ardipithecus kadabba Ardipithecus ramidus Non Skeletal 70-80 lbs. strongly built arm bones thin dental enamel ; smaller canines Australopithecus Rectangular anamensis arcade; Thick enamel Modern bipedal tibia Anterior Foramen magnum Origin in forested habitat tiny external ear canal 70-80 lbs. Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominid Australopithecus bahrelghazli Teeth Mandible Leg Arm Brow bridge Face & Chin Pelvis Height Abel name large Basin shaped Kenyanthropus platyops Australopithecus Large africanus molars Non Skeletal Weight mandible fragment, a lower second incisor, both lower canines, all 4 of its premolars Australopithecus Smaller afarensis incisors, larger molars; thick enamel Notable Deformed cranium Limbs more ape Lucy 1974, 3.2 M; Bipedal; 3.3 M tool use on ungulates Laetoli, Tanz. footprints 1979, 3.6 M Like rudolfensis? Taung child; Grassy woodland Bipedal & climber 3-4 ft. 75-125 lbs. Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominid Teeth Mandible Leg Arm Brow bridge Face & Chin Australopithecus garhi Paranthropus robustus Homo habilis Very large, thick enameled molars; small canines Notable Non Skeletal Height Weight Animal bones with flesh removed Apelike cranium Paranthropus Large aethiopicus incisors Australopithecus sediba Paranthropus boisei Pelvis 4 ft. 2 in (1.27 m) Larger than robustus Massi ve, wide, flat face; Longer arms than legs Variable size crania no PC bones with cranial remains; pointed sticks Abrasive food; worn enamel Oldowan Tools Per Wood, similar to afarensis & boisei 150 lbs./75 lbs. Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominid Teeth Mandible Leg Arm Brow bridge Face & Chin Pelvis Homo rudolfensis Home gautengensis Homo ergaster Homo erectus Teeth smaller than Aust. Long, robust lower leg = long distance Femur & tibia more flattened than modern Notable Non Skeletal Body proportions unknown = h. habilis Cooked Food? Bony ridge; sulcus behind; blunt ridge in midline (sagittal torus) Large socket for head of femur; consist ent with habitua l bipedal & endura nce runnin g Low crania, greatest width low on cranium; angulated occipital region Use of hand axes Height Weight Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominid Homo heidelbergensis Homo neanderthalis Teeth Smaller Mandible Smaller Leg Arm Thick & strong Thick shafts & large joints in 30-100K European /near East Brow bridge Face & Chin Pelvis Notable Non Skeletal Height Weight Not thick Large nasal opening; face projects in midline; Round ed craniu m; 202 positions in the mtDNA differ; 1-4% DNA of modern nonAfricans Cranial cavity larger than H. sapiens; burial of dead Homo sapiens Home florsensis Denisovans Homo like limbs; primitive ankle Primitive wrist 400 cc brain; homo like skull X-woman; 385 positions differ; 5% of Melanesians, New Guineans 40 inches Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Milestones Time Split from Chimpanzees Bipedalism Transformation of the canine Stone tools Handaxe Spear points Fire 5-7 M Symbolic Thought Art 35 T Split from Gorillas 10 M 4M 3.3M/2.6M 1-3 M 1M 800 T Hadar, A. afar. Gesher Benot Ya’aqov, Israel Stone Hearths, 300T 35 T Coexistence circa 1.8M: Paranthropus boisei, Homo rudolfensis, H. habilis and H. ergaster foraged in the same area around Lake Turkana. In Africa, H. erectus may have evolved into H. heidelbergensis, but in Asia a dead end. Migrations: Morphological traits typical of Neanderthals began to appear in European hominids at least 400,000 years ago and about 150,000 years ago in western Asia. Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Neanderthal sites: at least 30 (Neander Valley, Germany, 1856; Sipka, Moravia 1880; Spy, Belgium 1886; Krapina, Croatia, 1899-1906; Ehringsdorf, Germany 1908-1925; Le Moustier, France 1908; St. Brelade, Channel Islands, 1911; Kiik-Koba, Crimea, 1924; Mount Carmel, Palestine, 1929; Teskhik-Tash, central Asia, 1938; Saccopastore, Italy, 1929; Guattari/Circeo, Italy, 1939; Shanidar, Iraq, 1953; Amud, Israel, 1961; Kebara, Israel, 1964; Dederiych, Syria, 1993; St. Cesaire, France 1979; Zaffaraya, Spain, 1983; Lakonia, Greece, 1999) All modern human genes originated in Africa; in past 2 MYA, Africa was source of emigration of a H. ergaster hominin, then a H. heidelbergensis hominin, then several waves of modern humans; modern humans are derived from relatively recent, ca. 50-45 kya migration out of East Africa. Homo sapiens sites: Pestera cu Oase, Romania, c. 35 kya; Kent’s Cavern, England, c 30 kya; Bacho Kiro & Temnata, Bulgaria 43-40 kya; Papua New Guinea, Australia, Tasmania, 40 kya; Oceania, 35-30 kya; Arctic Circle, 27 kya; preClovis culture, Texas, 15 kya, Monte Verde, Chile, 12.5 kya; Clovis culture, before 11 kya Homo sapiens: migration out of Africa, then interbreeding with Neanderthals in Western Asia (65,000–90,000 years ago); (contributed 1-4% of their DNA to Homo sapiens); then a move to Southeast Asia; ancestors of East Asians and Western Indonesia arrived later, between 38-25TYA 2 migrations into Asia from Africa 1 - Denisovans: a common ancestor with anatomically modern human and Neanderthal mtDNAs about 1.0 million years ago. This indicates that it derives from a hominin migration out of Africa distinct from that of the ancestors of Neanderthals and of modern humans; 4-6% DNA to New Guinea, Melanesia, Aborigines by 44 TYA; human migration to SE Asia between 75 and 62TYA 2 – No Denisovan DNA: To East Mainland Asia (Han Chinese) and Western Indonesia Sources: Bernard Wood – Human Evolution, 2011 Richard Klein – Richard G. Klein, 2009 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Modern Human vs. Chimpanzee Skeleton (after B. Wood): Forehead Face Cranial vault Skull Brain size Foramen magnum Canine teeth Dentation Base of skull External Ear Canal Thorax Lumbar vertebrae Limb bones Limb proportions Thigh Bone Wrist Fingers Hand Foot Pelvis Development – Bones and teeth Locomotion Chin Human Steep Flat Widest higher up High, globular, rounded Large (1350cc) Forward in skull Small; smaller, more incisor like canines that occlude tip to tip Rectangular arcade; small front teeth Angled Large Straight sides; cone-shaped 5 Straight Lower limb long Straight Less mobile Straight, & long, opposable thumb Cup-shaped Arched & big toe straight Basin shaped; Neonatal head is tight fit Slow Bipedal Present Chimpanzee Low Projecting, snout-like Widest at base Smaller Small (300cc) Backward in skull Large, wear on sides; large upper canines are honed against the first lower premolars, producing a sharp edge in back of the canines. Curved arcade; large front teeth Straighter Small Conical, barrel-shaped rib cage 3-4 Curved Arms longer than legs; Lower limb short Angled toward knee More mobile Curved, long fingers, & short thumb Flat Flat & big toe angled Long, narrow; Neonatal head has ++ room Fast Knuckle walker None Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 More typical of hominin than ape: Large molars Small canines Thicker mandible Large brow ridge Canine worn at tip Hip joint: outer/cortical bone is thickest at top and bottom of neck Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 The Toba catastrophe theory suggests that a bottleneck of the human population occurred c. 70,000 years ago, proposing that the human population was reduced to perhaps 15,000 individuals[3] when the Toba supervolcano in Indonesia erupted and triggered a major environmental change. The theory is based on geological evidences of sudden climate change and on coalescence evidences of some genes (including mitochondrial DNA, Y-chromosome and some nuclear genes)[4] and the relatively low level of genetic variation with humans.[3] However, such coalescence is genetically expected and does not, in itself, indicate a population bottleneck, because mitochondrial DNA and Y-chromosome DNA are only a small part of the entire genome, and are atypical in that they are inherited exclusively through the mother or through the father, respectively. Most genes in the genome are inherited from either father or mother, and thus can be traced back in time via either matrilineal or patrilineal ancestry.[5] Research on many genes finds different coalescence points from 2 million years ago to 60,000 years ago when different genes are considered, thus disproving the existence of more recent extreme bottlenecks (i.e., a single breeding pair).[3][6] On the other hand, in 2000, a Molecular Biology and Evolution paper suggested a transplanting model or a 'long bottleneck' to account for the limited genetic variation, rather than a catastrophic environmental change.[7] This would be consistent with suggestions that in sub-Saharan Africa numbers could have dropped at times as low as 2,000, for perhaps as long as 100,000 years, before numbers began to expand again in the Late Stone Age.[8] Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 2003 SCIENTIFIC AMERICAN, INC. Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Denisovan distribution (David Reich et al., 2011): Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 References 1. Reich D, Patterson N, Kircher M, Delfin F, Nandineni MR, Pugach I, Ko AM-S, Ko Y-C, Jinam TA, Phipps ME, et al. 2011. Denisova admixture and the first modern human dispersals into southeast Asia and Oceania. American journal of human genetics 89:516-28. 2. Skoglund P, and Jakobsson M. 2011. Archaic human ancestry in East Asia. Proceedings of the National Academy of Sciences, U. S. A. Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Hominin Evolution (based on R. Klein, B. Wood), compiled by Charles J. Vella, 9/2012 Tapeworms: hominids inherited from carnivores (feed on same carcasses)