14 terms

Anth 101 Hominid Ancestors

Sahelanthropus tchadensis
"Toumai," ancestral Miocene ape found in Chad; brain case 340-360 cc; position of faramen magnum suggests bipedality; lived 6-7 mya
Orrorin tugenensis
"Millennium Man" found in Tugen Hills, Kenya; possibly earliest human ancestor, more human in some ways than australopithecines; possible bepedality; lived 6 mya
Ardipithecus ramidus
early Pliocene hominin; forest-dweller, possibly bipedal; lived about 4.4 mya
Australopithecus anamensis
found at Lake Turkana, Kenya, by Leaky and Walker; thick tooth enamel, rectangular dental arcade; tibia modified for bipedality; possible member of or direct predecessor of A. afarensis
Australopithecus afarensis
"Lucy," found at Laetoli, Tanzenia, and Hadar, Ethiopia; footprints evidence of bipedality; wrist adapted to tree climbing; cranial capacity 375-500 cc; lived 3.7-3.5 mya
Kenyanthropus platyops
found at Lake Turkana, Kenya, by Leaky in 1999; small brain case and small molars; possibly variant of A. afarensis; lived 3.5-2 mya
Australopithecus bahrelghazali
found by Brunet in Bahrel Ghazali, Chad; think enamel, incisor-like caninines; lived 3.5-3 mya, contemporary with A. afarensis
Australopithecus africanus
"Taung child," found by Dark; "Mrs. Ples," found by Broom in Sterkfontein; gracile australopithecine; grasping hallux; lived 3.0-2.3 mya
Australopithecus garhi
found with stone tools; gracile australopithecine; cranial capacity 450 cc; lived 2.5 mya
Australopithecus aethiopicus
"Black Skull," found in west Turkana, Kenya; lived in both savanna and woodland; early robust Pliocene australopithecine; cranial capacity 410 cc; lived 2.7-2.5 mya
Australopithecus boisei
"Zinjanthropus," found by Leaky in 1999; robust; cranial capacity 500-550 cc; lived 2.3-1.2 mya, contemporary with early Homo
Australopithecus robustus
discovered in South Africa by Broom in 1938; robust australopithecine; parabolic dental arcade, dished face, humanlike hallux, no diastema; cranial capacity 510 cc; lived 2.0-1.0 mya, contemporary with early Homo
Homo habilis
found by the Leakys in Tanzania, East Africa; found with Olduwan tools; cranial capacity 590-650 cc; lived 2.4-1.6 mya
Homo rudolfensis
skull found at Lake Turkana by Richard and Meave Leaky; possible variant of H. habilis due to sexual dimorphism; cranial capacity 526 cc; lived 1.9 mya