…The layer where the fossil was excavated is the lower part of the Kabu Formation, so it is thought to be slightly older than 700,000 years ago. Later, in 1937, a similar skull cap was discovered in Sangiran near Surakarta, and was announced by GHR von Königswald as Pithecanthropus II. Since then, more and more human fossils have been discovered in Sangiran, and up to now, Pithecanthropus VIII has been reported. … From [Meganthropus]...A hominoid fossil from the end of the early Pleistocene, about 1 million years ago, discovered on the island of Java in Indonesia. Two mandible fragments discovered in 1939 and 1941 in the Pechagan Formation of Sangiran, known as a source of human fossils, were unusually large compared to previously known Pithecanthropus, so G. von Königswald, the discoverer, considered them to be a new genus and species and named them M. palaeojavanicus . The mandible was 48 mm high and 28 mm thick, measured at the position of the mental foramen, making it 1.5 to 2 times the size of modern humans and roughly the size of a large gorilla, but the shape of the teeth, such as the first premolar being bicuspid, is characteristic of the hominidae. ... *Some of the terminology that mentions "Sangiran" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…出土層位はカブー層の下部にあたるので,古さは70万年前をややさかのぼるものと考えられる。その後1937年になって,スラカルタに近いサンギランSangiranでも,これによく似た頭蓋冠が発見され,ピテカントロプスII号としてG.H.R.vonケーニヒスワルトによって発表された。サンギランではその後も人類化石の発見が相次いで行われ,現在ではVIII号まで報告されている。… 【メガントロプス】より…インドネシアのジャワ島で発見された洪積(更新)世前期の末葉,約100万年前のヒト科化石。人類化石の産地として知られるサンギランSangiranのプチャガン層で1939年と41年に発見された2個の下顎骨の破片が,それまでに知られていたピテカントロプスに比べて異常に大きかったため,発見者のG.vonケーニヒスワルトはこれを新属新種と考えてメガントロプス・パラエオヤワニクスM.palaeojavanicusと命名した。おとがい孔の位置で測った下顎体の高さが48mm,厚さが28mmあり,現代人の1.5ないし2倍,ほぼ大型ゴリラなみの大きさであるが,第1小臼歯が二咬頭性であるなど,歯の形態はヒト科の特徴を備えている。… ※「Sangiran」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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