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"The Primitive Wrist of Homo floresiensis and Its Implications for Hominin Evolution



Whether the Late Pleistocene hominin fossils from Flores, Indonesia, represent a new species, Homo floresiensis, or pathological modern humans has been debated. Analysis of three wrist bones from the holotype specimen (LB1) shows that it retains wrist morphology that is primitive for the African ape-human clade. In contrast, Neandertals and modern humans share derived wrist morphology that forms during embryogenesis, which diminishes the probability that pathology could result in the
normal primitive state. This evidence indicates that LB1 is not a modern human with an undiagnosed pathology or growth defect; rather, it represents a species descended from a hominin ancestor that branched off before the origin of the clade that includes modern humans, Neandertals, and their last common ancestor."





Scientists: Hobbit Wasn't a Modern Human By RANDOLPH E. SCHMID


WASHINGTON (AP) - Scientists, wringing their hands over the identity of the famed "hobbit" fossil, have found a new clue in the wrist. Since the discovery of the bones in Indonesia in 2003, researchers have wrangled over whether the find was an ancient human ancestor or simply a modern human suffering from a genetic disorder.

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The wrist bones of the 3-foot-tall creature, technically known as Homo floresiensis, are basically indistinguishable from an African ape or early hominin-like wrist and nothing at all like that seen in modern humans and Neanderthals, according to the research team led by Matthew W. Tocheri of the Smithsonian's National Museum of Natural History.


That indicates that it is an early hominin and not a modern human with a physical disorder, they contend.


"It seals the deal," Tocheri said in a telephone interview."

Dean Falk of Florida State University said the new report helps confirm that conclusion.


"This is exciting and should help settle things," she said. "The authors are to be congratulated, not only for describing important new details about 'Hobbit,' but for shedding light on the evolution of the wrist and how it might have related to tool production."








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