翻訳と辞書
Words near each other
・ Valck
・ Valcke
・ Valckenburg baronets
・ Valco
・ Valco Melton
・ Valcolla
・ Valcon Games
・ Valcor
・ Valcour Aime
・ Valcour Bay
・ Valcour Formation
・ Valcour Island
・ Valcour Records
・ Valcouroceras
・ Valcouroceratidae
Valcourocratidae
・ Valcourt
・ Valcourt (city)
・ Valcourt (township)
・ Valcourt Airport
・ Valcourt, Haute-Marne
・ Valcourt, Quebec
・ Valcárcel
・ Valcălița River
・ Valcău de Jos
・ Valda
・ Valda Aveling
・ Valda Berzins
・ Valda Cooper
・ Valda Hansen


Dictionary Lists
翻訳と辞書 辞書検索 [ 開発暫定版 ]
スポンサード リンク

Valcourocratidae : ウィキペディア英語版
Valcourocratidae

The Valcouroceratidae is a family within the Oncocerida, nautiloid cephalopods from the middle and upper Ordovician, established by Rousseau Flower in 1945.
==Diagnosis==
Valcouroceratids are characterized by exogastric cyrtocones and brevicones that change during the life span from compressed to depressed or subtriangular in cross section, and which have ventral siphuncles that are cyrtochoanitic and which contain lammelar actinosiphonate fillings. The actinosiphonate fillings, commonly referred to as deposits, are radially inward projections of the connecting rings that extend longitudinally along the inner wall of the siphuncle and project forward as blades into the siphuncle interior from the septal foremina.(Sweet 1964, Flower 1950)

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「Valcourocratidae」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.