THE EVOLUTION OF THE MAMMALIAN FEMUR

摘要: Comparison of the femora advanced cynodonts, tritylodonts and monotremes shows that antero-ventral trochanter cynodonts is mammalian minor not reptilian internus as has been held. Consideration form pelvis supports this conclusion. The pelves anomodonts indicate an essentially musculature was developed that, though no known in group, iliacus muscle must be presumed to have developed. Among Theriodontia, gorgonopsids are considered retained a largely thigh musculature, but therocephalia scaloposaurid bauriamorphs appear achieved condition intermediate between those reptiles mammals. It claimed primitive Theria very similar could derived directly from one type. The monotremes, two three supposed Jurassic, specialized.