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Ramapithecus therefore is no longer considered a hominid.The field of science which studies the human fossil record is known as paleoanthropology.This species was named Australopithecus ramidus in September 1994 (White et al.1994; Wood 1994) from some fragmentary fossils dated at 4.4 million years.Some apes occurring within that time period, such as Ramapithecus, used to be considered as hominids, and possible ancestors of humans.Later fossil finds indicated that Ramapithecus was more closely related to the orang-utan, and new biochemical evidence indicated that the last common ancestor of hominids and apes occurred between 5 and 10 million years ago, and probably in the lower end of that range (Lewin 1987).Height varied between about 107 cm (3'6") and 152 cm (5'0"). africanus, and has a large, flat face and small teeth. africanus existed between 3 and 2 million years ago.

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However their pelvis and leg bones far more closely resemble those of modern man, and leave no doubt that they were bipedal (although adapted to walking rather than running (Leakey 1994)).Although the hominid fossil record is far from complete, and the evidence is often fragmentary, there is enough to give a good outline of the evolutionary history of humans.The time of the split between humans and living apes used to be thought to have occurred 15 to 20 million years ago, or even up to 30 or 40 million years ago.Sahelanthropus tchadensis Orrorin tugenensis Ardipithecus ramidus Australopithecus anamensis Australopithecus afarensis Kenyanthropus platyops Australopithecus africanus Australopithecus garhi Australopithecus sediba Australopithecus aethiopicus Australopithecus robustus Australopithecus boisei Homo habilis Homo georgicus Homo erectus Homo ergaster Homo antecessor Homo heidelbergensis Homo neanderthalensis Homo floresiensis Homo sapiens sapiens Some scientists use a broader definition of Hominidae which includes the great apes, and instead call the group I am discussing "hominins".For a good discussion of the hominid/hominin terminology issue, read this article by Lee Berger.A partial tibia (the larger of the two lower leg bones) is strong evidence of bipedality, and a lower humerus (the upper arm bone) is extremely humanlike.

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