擬錐石屬

擬錐石屬（學名：）是缽水母綱下已滅絕的一屬，生存於志留紀至三疊紀。本屬的物種生活在海洋中，利用其小底盤附著在海床上。

特徵 
殼有四個面，呈圓錐狀，其切面為菱形。四個面都都朝上拱起，間距著很密的線，四面相交的四個角是窄小的V形裂片。殼本身很薄，由磷酸鹽和蛋白質等構成。

物種
 Paraconularia acuminata
 Paraconularia arctica
 Paraconularia caledonica
 Paraconularia derwentensis
 Paraconularia kazanensis
 Paraconularia laskeri
 Paraconularia leonardensis
 Paraconularia margaritae
 Paraconularia matauraensis
 Paraconularia nefarius
 Paraconularia ornata
 Paraconularia pulcheria
 Paraconularia punjabica
 Paraconularia qinglongensis
 Paraconularia salaria
 Paraconularia spatia
 Paraconularia sueroi
 Paraconularia tepuelensis
 Paraconularia warthi
 Paraconularia yichunensis
 ''Paraconularia zhongyingensis

參考文獻 

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