| 翻訳と辞書 | Brachydeiroidea| Brachydeiroidea  : ウィキペディア英語版 | 
 
 Brachydeiroidea is a superfamily of small to moderately large-sized arthrodire placoderms from the Late Devonian of Europe and Eastern North America.
 Brachydeiroids have, in cross section, a highly compressed body, a pointed, sometimes highly elongated snout, and tremendous orbits.  The plates of the trunk shield are noticeably shortened: in ''Synauchenia'', the trunk shield and head shield are fused together as a single, immovable unit.  The superficial anatomy of brachydeiroids is extremely diverse.〔
 ==Families==
 
 
 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』
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