翻訳と辞書 |
Intejocerida : ウィキペディア英語版 | Intejocerida Intejocerida is the name given to a group of generally straight shelled nautiloid cephalopods originally found in Lower and Middle Ordovician sediments in the Angara River basin in Russia; defined in the Treatise as an order, and combined there with the Endocerida in the Endoceratoidea. ==Diagnosis== Members of the Intejocerida are typically straight shelled with large siphuncles that vary in position from ventral to central, in which septal necks from very short to holochoantic and connecting rings from moderately thick to apparently thin. Common to all, and the character by which the order was defined, are deposits within the siphuncle that have been described as longitudinal, radially arranged, calcareous lamellae. ==Taxonomy==
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「Intejocerida」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.
|
|