翻訳と辞書 |
Macrodomoceras : ウィキペディア英語版 | Macrodomoceras ''Macrodomoceras'' is an oncocerid genus, family Polyelasmoceratidae, from the Middle Devonian of Australia. The shell of ''Macrodomoceras'' is a compressed, endogastric cyrtocone, i.e section higher than wide and curved with the ventral side concave, with a subtriangular cross section. The siphuncle is ventral, marginal, with continuous actinosiphonate lamellae. ''Macrodomoceras'' resembles ''Danaoceras'' in its subtriangular cross section, but its sutures have bluntly pointed ventral saddles. ==References==
* Walter C. Sweet, 1964. Nautiloidea - Oncocerida; Treatise on Invertebrate Paleontology, Part K. Geological Society of America.
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「Macrodomoceras」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.
|
|