An extinct reptile belonging to the Theropoda suborder of the Saurischian order. It is the smallest of the small, lightweight carnivorous dinosaurs, the Coelurosauria, and is about the size of a chicken. It has a long neck and tail, was bipedal, and had short forelimbs with two digits. The shape of its entire skeleton is very similar to that of Archaeopteryx, and it has attracted attention as something intermediate between dinosaurs and Archaeopteryx. It was discovered in Jurassic lithographs in Germany, France, and other places, and two types have been reported. [Hasegawa Yoshikazu] Source: Heibonsha World Encyclopedia, 2nd Edition Information |
竜盤目の獣脚亜目に属する絶滅爬虫類。肉食性小型軽量級の恐竜,コエルロサウルス類Coelurosauriaの中でも最小で,ニワトリ大である。首と尾は長く,二足歩行性で,前肢は短くて指が2本。全身骨格の形態は始祖鳥に酷似し,恐竜と始祖鳥との中間的なものとして注目されている。ドイツ,フランスなどのジュラ紀の石版石から発見され,2種類の報告がある。【長谷川 善和】
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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