于梅法拉诺组发现的具关节的样本,为研究者提供了有关这一类动物的非头部骨骼的深入信息。其中奇异而独特的特征包括:中间外侧扁平且前后弯曲的胫骨、具双滑车的距骨、发育完全的肱骨滑车,以及异常多的躯椎。这一新类群拥有19节与肋骨相连的脊椎(胸椎)和11节不与肋骨相连的脊椎(腰椎)。除了这些衍生特征之外,这种来自马达加斯加的哺乳动物还拥有镶嵌的胸带形态:其前乌喙骨缺失,乌喙骨高度发达(形成一个扩大的过程,占关节窝的一半),间锁骨小,而且胸锁关节似乎可活动。有A ventrally facing glenoid and the well-developed humeral trochlea suggest a relatively parasagittal posture for the forelimbs. Remarkable features of the hind limb and pelvic girdle include a large obturator foramen similar in size to that of therians, a large parafibula, and the presence of an epipubic bone.[11]
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