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调孔亚纲

调孔亚纲的头颅骨

调孔亚纲(Euryapsida)又称阔孔亚纲上孔亚纲,是群中生代海生爬行动物,特征是头骨有大的上颞孔,而缺少下颞孔。牠们与单孔亚纲的差别在于,单孔亚纲的颞颥孔在下方。调孔亚纲是个复系群,这意味者不同演化支彼此并不互相关联,且从不同祖先演化而来。现在普遍认为调孔亚纲其实是多群失去下颞孔的双孔亚纲动物。调孔亚纲现在并不在科学文献中使用,鱼龙超目被分类于双孔亚纲鳍龙超目则被分类于鳞龙形下纲,包含楯齿龙目幻龙目蛇颈龙目

另一个过去的分类单元“Enaliosauria”,则包含鱼龙目蛇颈龙目[1]

参考资料

  1. ^ 存档副本. [2012-06-14]. (原始内容存档于2012-10-23). 
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调孔亚纲
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