翻訳と辞書 |
Sholakoceras : ウィキペディア英語版 | Sholakoceras
''Sholakoceras'' is an extinct nautiloid cephalopod from the Lower Permian of southern Russia, included in the Tainoceratacean family Rhiphaeoceratidae,(order Nautilida). The shell of ''Shalakoceras'' is evolute with a perforate (see through) umbilicus. Whorl sections are subquadrate with the ventral and lateral sides flattened and ventral and ubilical shoulders rounded. Lateral areas bear short, slightly oblique ribs. sutures form broad ventral saddles with a slight, shallow lobe, very shallow lateral lobes, and a deep funnel-shaped dorsal lobe. ==See also==
* List of nautiloids
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Sholakoceras」の詳細全文を読む
スポンサード リンク
翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|