翻訳と辞書 |
Brancoceras
''Brancoceras'' is a rather small, strongly ribbed, acanthoceratacean ammonite from the Albian stage of the Lower Cretaceous, the shell evolute with a subquadrate whorl section and rounded venter. The suture forms a finely squiggly line with well defined lobes and saddles. ''Brancoceras (Eubrancoceras) aegoceratoides'' reached a diameter of at least . ''Brancoceras'' is representative of the subfamily Branoceratinae, which makes up part of the acanthoceratacean family Brancoceratidae. Its stratigraphic range is rather narrow, extending only from the upper Lower to the Middle Albian. ==References==
* *Ryszard Marcinowski and Jost Wiedmann. The Albian Ammonites of Poland. Palaeontologia Polonica no. 50, 1990
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「Brancoceras」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.
|
|