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Erycitidae
Erycitidae is a family of Lower and Middle Jurassic ammonites included in the Hammatoceratoidea. The hammatoceratid subfamily Erycitinae is equivalent. Genera include ''Erycites'' (type) and ''Abbasites''. ==Diagnosis== Erycitids are generally evolute with all whorls showing and are strongly ribbed with ribs branching on the outer part of the flanks and crossing over the outer rim, or venter.
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「Erycitidae」の詳細全文を読む
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