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'Hobbits' were a distinct species after all

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Kara Sundstrom
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« on: November 22, 2015, 04:21:24 pm »

 An ancient, 3-foot-tall (0.9 meters) human whose diminutive stature has earned it the nickname "hobbit" has puzzled evolutionary scientists since its little bones were discovered on the Indonesian island of Flores. Some have suggested the individual was a Homo sapien with some miniaturizing disorder.

Now, teeth from the hobbit suggest it belonged to a unique species rather than a modern human with a growth disorder. The new research also suggests hobbits may share a direct ancestor with modern humans.

The 18,000-year-old fossil remains of the hobbit were discovered in 2003. Since then, scientists have suggested that the hobbit, which had a brain about the size of a grapefruit, was a unique branch of the human lineage Homo, dubbed Homo floresiensis. However, other researchers have argued the hobbit was really a modern human with microcephaly, a condition that leads to an abnormally small head, a small body and some mental retardation. [Real-Life Hobbit: See Photos of Homo floresiensis]

To learn more about the hobbit, scientists have now performed the first comprehensive analysis of the ancient human's teeth. The researchers compared the 40 known hobbit teeth with those from 490 modern humans from Asia, Oceania, Africa and Europe, as well as from a variety of extinct hominins, such as Homo habilis, which is suspected to be among the first makers of stone tools. (Hominins consist of humans and their relatives dating after the split from the chimpanzee lineage.)
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