(34)管刺属


Siphonognathus Branson and Mehl,1934; Branson and Mehl,1944Siphonodella (Eosiphonodella)Ji,1985Siphonodella(Siphonodella)Branson and Mehl,Ji,1985模式种:Siphonodella duplicata Branson and Mehl,1934特征:齿台矛状,不对称,高高拱起,拱起的顶点就在基腔...... >>[查看更多详细图片]

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