翻訳と辞書 |
Eotripteroceras : ウィキペディア英語版 | Eotripteroceras
''Eotripteroceras'' is a smooth-shelled michelinocerin orthocerid from the middle Ordovician of the state of New York. The shell of ''Eotripteroceras'' is a depressed orthocone with the underside (the venter) flatter than the upper (the dorsum). The siphuncle is below the center -as viewed in horizontal orientation- and is cylindrical in form. Both siphuncle and chambers are empty. ==''References''==
* Sweet, Walter C. 1964. Nautiloidea-Orthocerida. Treatise on Invertebrate Paleontology, Part K. Geological Soc of America, and Univ Kansas Press.
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「Eotripteroceras」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.
|
|