ANT 350 Lecture Notes - Lecture 20: Paranthropus, Koobi Fora, Brain Size
Document Summary
Makes sense but not easy to separate groups unequivocally. Example: er 3732 large brain: rudolfensis: supraorbital torus: habilis, malar surface: rudolfensis. Probably two taxa but group membership not clear-cut. Oh 7 type specimen for h. habilis (1964) large teeth for habilis. More overlap of early homo samples cranial capacity: 729 824 cm3. All known early homo crania & koobi fora legs = < 1. 95 mya. Earlier fragmentary evidence: mandibles & teeth, omo shungura e/f (2. 4-2. 3 mya, also ~ garhi/africanus. Baringo chemeron temporal bone (knm- bc 1) (2. 4 mya) Al 666 maxilla hadar @ 2. 33 mya. Earliest homo: ledi-geraru (ethiopia, 2. 75-2. 8 mya, dental and mandibular features not afarensis transitional between australopiths and homo. Al 666 teeth/morphology could be africanus or garhi. Africanus/garhi or early homo not certain. M. wolpoff true erectus is just as early at koobi fora as definite habilis/rudolfensis: knm-er 2598 occipital -1. 9 mya, knm-er 3228 os coxae - 1. 95 mya.
