“What Now,” Rihanna’s Latest Video
Free PR Web Directory
Researchers discovered a 1.8 million-year-old skull that suggested evidence of human evolution from a single species that emerged from Africa. The skull, the most complete of any other discovered from that time period, was unearthed at Dmanisi in Georgia with four other partially completed skulls.
According to David Lordkipandze, an anthropologist at the Georgian National Museum in Tbilisi, the discovery suggests that there may have been only one species of early human in a key period of time. One of the skulls had a small braincase, a long face and large teeth, a combination of features never before seen.
Many scientists in the field immediately voiced their doubts at the claim. Other Hominid species like Homo erectus, Homo Habilis and Homo rudolfensis were identified by their legs, wrists and ankles. Bernard Wood, human origins professor at Georgetown University in Washington DC said, “They look at this overall cranial shape and say, ‘if you look at Homo Habilis and erectus, there isn’t much more difference. You can’t infer the latter from the former.”
Many scientists in the field of human evolution find themselves in one of two groups according to William Harcourt-Smith, assistant professor at Lehman College. The first is the “splitters.” They see the tree of evolution as having many different species. The other groups, the “lumpers”, see wider species categories and fewer limbs on the tree of evolution.
While the acknowledgement of the discovery is split, it is a valuable discovery nonetheless.
“To be honest it just adds some important fuel to the debate,” Harcourt-Smih wrote in an email. “The Lumoers, of course, will love this new paper, but I can see splitters saying there is too much variation in both African early Homo and Dmanisi sample for them to all be Homo erectus.”
For more information on this story, click here.