Ornithischia

Japanese: Ornithischia
Ornithischia

…A.S.Romer (1950) divided them into five orders: (1) Thecodontia (Triassic) (2) Crocodilia (Triassic to modern) (3) Pterosauria (Jurassic to Cretaceous) (4) Saurischia (Triassic to Cretaceous) (5) Ornithischia (Late Triassic to Cretaceous) Dinosaurs refer to two of these orders, Saurischia and Ornithischia. Saurischia has a pubic bone that extends downward and forward, separate from the ilium and ischium, while Ornithischia has a pubic bone that is parallel to the ischium. …

*Some of the terminology that mentions "Ornithischia" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ローマーA.S.Romer(1950)は次の5目に分けた。(1)槽歯目Thecodontia 三畳紀(2)鰐目Crocodilia 三畳紀~現世(3)翼竜目Pterosauria ジュラ紀~白亜紀(4)竜盤目Saurischia 三畳紀~白亜紀(5)鳥盤目Ornithischia 後期三畳紀~白亜紀恐竜類はこのうちの,竜盤目と鳥盤目の2目を指す。竜盤目は恥骨が腸骨と坐骨から離れ前下方に伸びているもので,鳥盤目は恥骨と坐骨とが並行して接している。…

※「Ornithischia」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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