翻訳と辞書 Words near each other ・ Psara cryptolepis ・ Psara dorcalis ・ Psara dryalis ・ Psara ferruginalis ・ Psara frenettalis ・ Psara glaucalis ・ Psammophora saxicola ・ Psammophylax rhombeatus ・ Psammopolia ・ Psammopolia arietis ・ Psammopolia insolens ・ Psammopolia ochracea ・ Psammopolia sala ・ Psammopolia wyatti ・ Psammosere ・ Psammosteida ・ Psammosteidae ・ Psammotermes ・ Psammotermes allocerus ・ Psammotis ・ Psammotis orientalis ・ Psammotis pulveralis ・ Psammotis turkestanica ・ Psammphiletria ・ Psammphiletria delicata ・ Psammphiletria nasuta ・ Psammuthes ・ Psamtik I ・ Psamtik II ・ Psamtik III Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Psammosteida ： ウィキペディア英語版 Psammosteida Psammmosteida is a taxon of pteraspidid heterostracan agnathans. The psammosteids had broad, flattened bodies, suggesting a predominantly benthic habit. The earliest unequivocal psammosteid is ''Drepanaspis'' of Early Devonian Germany, which is either included in the family Psammosteidae, or placed within its own family, Drepanaspididae. If the late Silurian/Early Devonian ''Weigeltaspis'' is a psammosteid, as opposed to being a traquairaspid, then that genus, instead, would be the oldest psammosteid. However, its placement within Heterostraci remains a matter of debate. Other notable psammosteids include ''Psammosteus'', and ''Obruchevia'', two genera of enormous species with dorsal shields around one meter in diameter. The Psammosteids were the only heterostracans to survive to the end of the Devonian, where they finally perish during the Hangenberg event. 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「Psammosteida」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.