Locomotion in rauisuchid thecodonts
Locomotion in rauisuchid thecodonts
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劳氏鳄科动物的运动
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
J. Bonaparte
中科院分区：
文献类型：
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作者：
J. Bonaparte
摘要 对劳伊鳄科的系统研究表明，龟齿兽亚目中最低水平的运动组织是原鳄科，它可以被视为形成原鳄亚目。红鳄科和Rauisuchidae科的形态和生态关系表明，它们应该被称为一个新的亚目——红鳄亚目，其运动装置显示出源自原鳄亚目（Proterosuchidae）原始条件的几个重要特征。在高级的Rauisuchidae中，髂骨从垂直位置移动到几乎水平位置，髋臼几乎向腹侧突出。它需要对骶骨肋骨以及耻骨和坐骨的近端区域进行重大修改，并导致与垂直下股骨的重力门关系。由于这种情况，股骨不需要前内侧突出的头部和突出的第四和小转子，如两个顺序......
ABSTRACT The systematic approach to the Rauisuchidae suggests that the lowest level of locomotor organization of the Thecodontia is represented by the Proterosuchidae, which can be regarded as forming the suborder Proterosuchia. The morphological and ecological relationships of the families Erythrosuchidae and Rauisuchidae suggest that they should be referred to a new suborder, the Erythrosuchia, whose locomotor apparatus shows several important characters derived from the primitive condition present in the Proterosuchia (Proterosuchidae). In the advanced Rauisuchidae the ilia moved from vertical to almost horizontal position, with the acetabulum projecting nearly ventrally. It required significant modifications in the sacral ribs and proximal areas of the pubes and ischia, and resulted in a type of graviportal relation with the subvertical femur. Because of this condition, the femur did not require the anteromedially projecting head and the prominent fourth and lesser trochanters as in the two orders of ...