英和和英

出典:『Wikipedia』 (2011/01/30 21:38 UTC 版)

英語による解説

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Bottosaurus is an extinct genus of crocodile. Specimens have been found from New Jersey, North and South Carolina, and Colorado. It had distinctively thick osteoderms that lacked the pitting of most other crocodylians. The unusual blunt, conical tribodontid crushing teeth are the most common diagnostic material to fossilize and be recovered, although teeth from the posterior portion of the jaw tend to be more laterally compressed like those of other related crocodiles. The teeth had a "wrinkled" enamel surface and prominent annual rings with vertical ridges running down them. A short, massive lower jaw that is nearly circular in cross-section is evident from remains of the type species B. harlani.