Thursday, March 05, 2015

No, these are not your grandfather's dentures.


The Ledi-Geraru mandible fossil. Credit William Kimble/Arizona State University. 

...Mr. Seyoum, (click here) a graduate student in paleoanthropology at Arizona State University, had made a discovery that vaulted evolutionary science over a barren stretch of fossil record between two million and three million years ago. This was a time when the human genus, Homo, was getting underway. The 2.8-million-year-old jawbone of a Homo habilis predates by at least 400,000 years any previously known Homo fossils....