Fossils point to a big family for human ancestors

@article{Kaplan2012FossilsPT,
  title={Fossils point to a big family for human ancestors},
  author={M. Kaplan},
  journal={Nature},
  year={2012}
}
Jaw structures suggest that at least three Homo species once roamed the African plains. 

References

SHOWING 1-2 OF 2 REFERENCES
New fossils from Koobi Fora in northern Kenya confirm taxonomic diversity in early Homo
TLDR
Three newly discovered fossils are reported on that clarify the anatomy and taxonomic status of KNM-ER 1470 and confirm the presence of two contemporary species of early Homo, in addition to Homo erectus, in the early Pleistocene of eastern Africa. Expand
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  • Nature
  • 2012