Disputed fossil study splits a pivotal early Homo species in two
Dmanisi Team/Georgian National Museum
A controversial fossil and soil analysis concludes that a key West Asian site hosted not one but two Homo species, one living around 1.8 million years ago and another several hundred thousand years later.
A team that excavated partial skeletons at Dmanisi, in the nation of Georgia, categorized the finds as part of one species, Homo erectus, that lived in Africa and West Asia 1.8 million years ago (SN: 11/16/13, p. 6). But disparities in several skeletal features that emerge early in life distinguish a large Dmanisi lower jaw from two smaller ones, signaling the presence of separate species, asserts a team led by paleoanthropologist José María Bermúdez de Castro of the National Research Center on Human Evolution in Burgos, Spain. The small jaws come from a population that was closely related to early African Homo populations,