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- OH_7 abstract "OH 7 (Olduvai Hominid № 7), also nicknamed \"Johnny's Child\", is the type specimen of Homo habilis. The fossils were discovered on November 4, 1960 in Olduvai Gorge, Tanzania, by Jonathan and Mary Leakey. The remains are dated to approximately 1.75 million years, and consist of fragmented parts of a lower mandible (which still holds thirteen teeth, as well as unerupted wisdom teeth), an isolated maxillary molar, two parietal bones, and twenty-one finger, hand, and wrist bones.The OH 7 hand is wide, with a large thumb and broad fingertips, similar to that of humans; however, unlike in humans the fingers are relatively long and exhibit chimpanzee-like curvature. Furthermore, the thumb's orientation relative to the other fingers resembles the anatomy of great apes. The parietal bones — a nearly complete left parietal and fragmented right parietal — were used to deduce the cranial capacity of the hominid, which was placed at 663 cc in account of the fact that the fossils belonged to a 12- or 13-year-old male. This was extrapolated by Phillip Tobias to 674 cc for the hominid's full adult potential. However, other scientists have estimated the cranial capacity at 590 cc to 710 cc.Louis Leakey, John Napier, and Phillip Tobias were among the first to extensively study the fossils. The Leakey team and others argued that, due expanded cranial capacity, gnathic reduction, relatively small post-canine teeth (compared to Paranthropus boisei), Homo-like pattern of craniofacial development, and a precision grip in the hand fragments (which indicated the ability for tool use), set OH 7 apart as a transitional species between Australopithecus africanus and Homo erectus.The Leakey team announced the new species Homo habilis in the April 1964 issue of Nature, igniting debate among the anthropology community which lasted through the 1970s. As early as May 1964, Kenneth Oakley and Bernard Campbell had raised concerns about the Leakey team's findings with their own publication in Nature, and in July of that same year Sir Wilfrid Le Gros Clark bluntly stated his hope that H. habilis \"will disappear as rapidly as he came.\" The controversy and bias against the newly named species lead some anthropologists to refer to H. habilis as Australopithecus habilis or assign associated fossil remains to other Homo species, a trend that continued long after Le Gros Clark's death in 1971.Other critics noted that OH 7 was found in a region known to contain P. boisei fossils, was of an immature individual, and that the differences between H. habilis and P. boisei were not enough to warrant a new species. Some believe OH 7 more closely resembles A. africanus.".
- OH_7 thumbnail Homo_Habilis_Oh7.jpg?width=300.
- OH_7 wikiPageExternalLink books?id=bmZR8nMyS8sC&pg=PA130.
- OH_7 wikiPageExternalLink leakey_etal_nature_1964.pdf.
- OH_7 wikiPageExternalLink 1996a.pdf.
- OH_7 wikiPageID "5955713".
- OH_7 wikiPageLength "6985".
- OH_7 wikiPageOutDegree "28".
- OH_7 wikiPageRevisionID "705070947".
- OH_7 wikiPageWikiLink Australopithecus_africanus.
- OH_7 wikiPageWikiLink Category:Homo_habilis_fossils.
- OH_7 wikiPageWikiLink Category:Prehistoric_Tanzania.
- OH_7 wikiPageWikiLink Hominidae.
- OH_7 wikiPageWikiLink Homo_erectus.
- OH_7 wikiPageWikiLink Homo_habilis.
- OH_7 wikiPageWikiLink Jaw.
- OH_7 wikiPageWikiLink John_R._Napier.
- OH_7 wikiPageWikiLink Jonathan_Leakey.
- OH_7 wikiPageWikiLink Kenneth_Oakley.
- OH_7 wikiPageWikiLink List_of_fossil_sites.
- OH_7 wikiPageWikiLink List_of_human_evolution_fossils.
- OH_7 wikiPageWikiLink Louis_Leakey.
- OH_7 wikiPageWikiLink Mary_Leakey.
- OH_7 wikiPageWikiLink Nature_(journal).
- OH_7 wikiPageWikiLink Ohio_State_Route_7.
- OH_7 wikiPageWikiLink Ohios_7th_congressional_district.
- OH_7 wikiPageWikiLink Oldowan.
- OH_7 wikiPageWikiLink Olduvai_Gorge.
- OH_7 wikiPageWikiLink Paranthropus_boisei.
- OH_7 wikiPageWikiLink Phillip_V._Tobias.
- OH_7 wikiPageWikiLink Tanzania.
- OH_7 wikiPageWikiLink Type_(biology).
- OH_7 wikiPageWikiLink Wilfrid_Le_Gros_Clark.
- OH_7 wikiPageWikiLinkText "OH 7".
- OH_7 age "5.52258E13".
- OH_7 catalogNumber "OH 7".
- OH_7 dateDiscovered "1960-11-04".
- OH_7 discoveredBy Jonathan_Leakey.
- OH_7 placeDiscovered Olduvai_Gorge.
- OH_7 placeDiscovered Tanzania.
- OH_7 species "Homo habilis".
- OH_7 wikiPageUsesTemplate Template:Cite_book.
- OH_7 wikiPageUsesTemplate Template:Cite_journal.
- OH_7 wikiPageUsesTemplate Template:Dablink.
- OH_7 wikiPageUsesTemplate Template:Infobox_fossil.
- OH_7 wikiPageUsesTemplate Template:Refbegin.
- OH_7 wikiPageUsesTemplate Template:Refend.
- OH_7 wikiPageUsesTemplate Template:Reflist.
- OH_7 wikiPageUsesTemplate Template:Sfn.
- OH_7 subject Category:Homo_habilis_fossils.
- OH_7 subject Category:Prehistoric_Tanzania.
- OH_7 hypernym Specimen.
- OH_7 type Place.
- OH_7 type Object.
- OH_7 comment "OH 7 (Olduvai Hominid № 7), also nicknamed \"Johnny's Child\", is the type specimen of Homo habilis. The fossils were discovered on November 4, 1960 in Olduvai Gorge, Tanzania, by Jonathan and Mary Leakey.".
- OH_7 label "OH 7".
- OH_7 sameAs Q7072569.
- OH_7 sameAs m.0fgj5c.
- OH_7 sameAs Q7072569.
- OH_7 wasDerivedFrom OH_7?oldid=705070947.
- OH_7 depiction Homo_Habilis_Oh7.jpg.
- OH_7 isPrimaryTopicOf OH_7.