THE SKULL OF A NEW EOSUCHIAN REPTILE FROM THE LOWER JURASSIC OF SOUTH-WALES
THE SKULL OF A NEW EOSUCHIAN REPTILE FROM THE LOWER JURASSIC OF SOUTH-WALES
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DOI：
10.1111/j.1096-3642.1980.tb00852.x
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发表时间：
1980-01-01
影响因子：
2.8
通讯作者：
EVANS, SE
中科院分区：
文献类型：
--
作者：
EVANS, SE
一种新爬行动物化石的头骨，GEPHYROSAURUS Bridensis gen。等十一月被描述。该描述基于大量孤立但保存完好的头骨，这些头骨来自下侏罗世时期哺乳动物的裂缝填充物。头骨是双孔的，具有不完整的下颞弓和固定的方形。与早期非主龙类双孔类爬行动物的比较表明，地龙是始鳄亚纲的成员，是双孔亚纲的下纲。简要讨论了始鳄纲和有鳞目的分类学，并回顾了链节作为有鳞目诊断特征的用途。一些二叠纪和三叠纪的属，包括Paliguana属、Tanystropeus属和Kuehneosaurus属，以前被归类为有鳞目动物，但它们都是始鳄类。地龙是一种小型食虫动物，有着大眼睛和良好的听力。它是昼行性动物，不会与同时代的夜行性哺乳动物摩根古兽（Morganucodon）和库尼兽（Kuehneotherium）竞争。
The skull of a new fossil reptile, GEPHYROSAURUS bridensis gen. et sp. nov. is described. The description is based on a large collection of isolated, but well preserved skull bones from mammal-bearing fissure infills of Lower Jurassic age. The skull is diapsid with an incomplete lower temporal arcade and a fixed quadrate. Comparison with earlier non-archosaurian diapsid reptiles indicates that Gephyrosaurus is a member of the Eosuchia, an infraclass of the subclass Diapsida. The taxonomy of the Eosuchia and Squamata is discussed briefly and the use of streptostyly as a diagnostic squamate character is reviewed. Several Permian and Triassic genera including Paliguana, Tanystropheus and Kuehneosaurus, which were previously classified as squamates, are eosuchians. Gephyrosaurus was a small insectivore with large eyes and good hearing. It was diurnal and did not compete with the contemporary mammals Morganucodon and Kuehneotherium, which were nocturnal.