Million years ago fossil leakey dating

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For some additional takes, check out Erin Waymans piece at Hominid Hunting (Smithsonian) and Zachary Cofrans great discussion of these new fossils alongside the material from Malapa, South Africa, at Lawnchair Anthropology.This is a critical time period in human evolutionary history, as it corresponds to the early evolution of our genus, Homo.rudolfensis really was a separate type of human that existed around two million years ago alongside other species of humans.For a long time the oldest known human ancestor was thought to be a primitive species, dating back 1.8 million years ago called Homo erectus.The current arguments about early Homo can be viewed, in some ways, as dating back to the discovery of fossil material from Olduvai Gorge by Mary and Louis Leakey back in the 1960s.When the original Olduvai material was discovered it showed a combination of characters that appeared intermediate between already known South African Australopiths (A.

If the new trait is better suited to the environment then the new species thrives, if not it becomes extinct.It preserves previously unknown morphology, including moderately sized, mesiodistally long postcanine teeth.The nearly complete mandible KNM-ER 60000 and mandibular fragment KNM-ER 62003 have a dental arcade that is short anteroposteriorly and flat across the front, with small incisors; these features are consistent with the arcade morphology of KNM-ER 1470 and KNM-ER 62000.The close spacing of the footprints is evidence that the people who left them had a short stride, and therefore probably had short legs.It is not until much later that early humans evolved longer legs, enabling them to walk farther, faster, and cover more territory each day.

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