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Dmanisi skull questioned the existence of the species Homo

21 Oct

skullThe team of anthropologists found that the variation of the internal anatomical features in the skulls from Dmanisi, Georgia questioned the legitimacy of allocation Homo habilis, Homo erectus and other ancient people as a separate species. The work is published in the journal Science, where you can also read an editorial about the discovery. lower jaw of an ancient man who became the subject of research, anthropologists have found back in 2000. Four years later, he was discovered by his skull and some other bones of the skeleton. As in the previous case of four people, all the bone was found in wells that were den predatory cats. Computer modeling based on imaging data showed that the amount of cerebral holder last (fifth) of the skull was 546 cubic centimeters. For the genus Homo is very small: three times less than that of modern humans, and very close to the performance of Australopithecus (450 cubic centimeters). The shape of the other parts (brow arches, jutting jaw) skull number five was very primitive, but it definitely belongs to the genus Homo. Trying to determine the kind of ancient man, the authors compared the five skulls found in Dmanisi each other and spent a statistical analysis of variance. We find that the magnitude of the scatter is very large, although the bones were found in the same place and date back to a very narrow time interval. Since all people of Dmanisi, obviously, represent the same population and differ only in gender and age, it shows a surprisingly high variation of anatomical features of the ancient people. According to anthropologists, if these skulls have been found in different parts of Africa, they would be assigned to different types:

The difference between Homo habilis and Homo erectus is placed inside the variations of the anatomy of the Dmanisi skulls. skulls from Dmanisi, whose age is estimated at 1.8 million years, are the oldest evidence of the existence of hominids out of Africa. According to some anthropologists, it is one of the most important discoveries in the last decade.

 
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Posted by on October 21, 2013 in civilization, Historical

 

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