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The Omo remains are a collection of hominin〔This article quotes historic texts that use the terms 'hominid' and 'hominim' with meanings that may be different from their modern usages. This is because several revisions in classifying the great apes have caused the use of the term "hominid" to vary over time. Its original meaning referred only to humans (''Homo'') and their closest relatives. That restrictive usage has been largely assumed by the term "hominin", which comprises all members of the human clade after the split from the chimpanzees (''Pan''). The modern meaning of the term "hominid" refers to all the great apes, including humans. Usage still varies, however, and some scientists and laypersons still use the term in the original restrictive sense; the scholarly literature generally will show the traditional usage until around the end of the 20th century. For further information, see ''Hominini'' (at "hominins") and ''Hominidae'' (at discussion of the terms "hominid" and "hominin" in the lede section). In this article, ''hominid'' is italicized when the traditional term is necessary to keep as-is—as in a quotation, or a record, or a title, etc.〕 bones discovered between 1967 and 1974 at the Omo Kibish sites near the Omo River, in Omo National Park in south-western Ethiopia.〔(2011-08-27 )〕 The bones were recovered by a scientific team from the Kenya National Museums directed by Richard Leakey and others. The remains from Kamoya's ''Hominid'' Site (KHS) were called ''Omo I'' and those from Paul's ''Hominid'' Site (PHS) ''Omo II''. Parts of the fossils are the earliest to have been classified by Richard Leakey as ''Homo sapiens''. In 2004, the geologic layers around the fossils were dated; and the authors of the study concluded that the "preferred estimate of the age of the Kibish ''hominids''〔 is 195 ± 5 ka (years ago )", which would make the fossils the oldest known ''Homo sapiens'' remains.〔 Because this discovery is the earliest thus far, Ethiopia is the current choice for the cradle of ''Homo sapiens''". ==Fossils== The bones include two partial skulls, four jaws, a legbone, around two hundred teeth and several other parts.〔 The two specimens, Omo I and Omo II, differ in morphological traits. The Omo II fossils indicate more archaic traits. Studies of the postcranial remains of Omo I indicate an overall modern human morphology with some primitive features. The fossils were found in a layer of tuff, between a lower, older geologic layer named Member I and a higher, newer layer dubbed Member III.〔 The Omo I and Omo II hominin fossils were taken from similar stratigraphic levels over Member I.〔〔Ian McDougall, Francis H Brown, John G Fleagle ''Sapropels and the age of hominins Omo I and II, Kibish, Ethiopia.'' Journal of Human Evolution (2008) Volume: 55, Issue: 3, Pages: 409-20 ( PubMed: 18602675 Copyright © 2012 Mendeley Ltd. All rights reserved. ) (2012-01-02 )〕 Because very limited fauna and few stone artifacts were found at the sites when the original Omo remains were discovered, "the reliability of the dates and the provenance of the Kibish ''hominids''" was "repeatedly questioned."〔 In 2008 new bone remains were discovered from Awoke's ''Hominid'' Site (AHS). The AHS fossil's tibia and fibula were unearthed from Member I, the same layer from which the other Omo remains derive. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Omo remains」の詳細全文を読む スポンサード リンク
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