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首页> 外文期刊>Neues Jahrbuch fur Geologie und Palaontologie. Abhandlungen >New material of Elanodactylus prolatus ANDRES & JI, 2008 (Pterosauria: Pterodactyloidea) from the Early Cretaceous Yixian Formation of western Liaoning, China
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New material of Elanodactylus prolatus ANDRES & JI, 2008 (Pterosauria: Pterodactyloidea) from the Early Cretaceous Yixian Formation of western Liaoning, China

机译：辽西地区早白垩世义县组的新纪元ANDRES＆JI，2008年（翼龙：翼手龙）的新材料

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摘要

A new specimen of Elanodactylus prolatus ANDRES & JI, 2008 is described from the Early Cretaceous Yixian Formation of Chaoyang, western Liaoning, China. The new specimen confirms the validity of E. prolatus and its unexpected feature, unique among pterodactyloids, the first wing phalanx of E. prolatus being shorter than the second and third wing phalanges. Additionally, the specimen provides new information about the pelvic girdle and hind limb: puboischiadic plate with a prominent, tongue-like ventral process; a semicircular prepubis; long and slender metatarsal III; and strongly reduced pedal digit V Moreover, the elongate second and third wing phalanges possibly represent an independently evolved feature, which convergent on that seen in primitive members of the rhamphorhynchoids. Especially, when combined with recent discoveries of the Anurognathidae, this feature of Elanodactylus further increases the complexity of the pattern of wing phalanx proportions among Pterosauria.
机译：从辽西朝阳的早白垩世义县组描述了一种新的拟趾甲标本ANDRES＆JI，2008。新的标本证实了大肠埃希氏菌的有效性及其出乎意料的特征，在翼手龙类中是独特的，大肠埃希氏菌的第一翼指骨短于第二和第三翼指骨。此外，标本还提供了有关骨盆带和后肢的新信息：耻骨软化板具有突出的舌状腹突;半圆形耻骨; meta骨细长III而且，细长的第二翼和第三翼指骨可能代表了一个独立发展的特征，该特征会聚在菱形斜突的原始成员中。尤其是，与最近发现的棘齿龙科相结合时，棘指龙的这一特征进一步增加了翼龙中翼指骨比例模式的复杂性。

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