The phylogeny and paleobiology of the early Reptilia

真羊膜动物是一种主要的羊膜动物分支，包括蛇、恐龙和鸟类等受欢迎的动物，其起源和早期进化仍然没有令人满意的了解。目前，基栖类爬行动物分为两类，但两者的单系性尚不清楚，可能有些分类群与更知名的跳甲类爬行动物有更密切的关系。对图林根州下二叠纪迄今尚未完全了解的分类单元thuringgohyris的新标本的调查(其解剖结构似乎介于角类和原甲壳类之间)，北美密切相关分类群的修订，包括出生后个体发育的研究，以及早期真尿囊类和相关分类群的系统发育分析，将研究以下问题：1)最早的真核生物是单系的，还是通向浸水类爬行动物的一个等级？2)个体发育轨迹是否可识别并有助于理解早期羊膜动物/原甲虫的生物学？3)是否有可能为导致羊膜动物/真尿囊动物解剖学的形态转变开发一个解释模型？然后，结果将被用于功能调查，包括对现有羊水的研究。

The origin and early evolution of the Eureptilia, a major amniote clade comprising popular animals like snakes, dinosaurs, and birds, is still not satisfactorily understood. Basal eureptiles are currently subdivided into captorhinids and protorothyridids, but the monophyly of the two is not clear, and maybe some taxa are more closely related to the better-known diapsid reptiles. The investigation of newly recovered specimens of the hitherto incompletely known taxon Thuringgothyris from the Lower Permian of Thuringia, whose anatomy appears "intermediate" between captorhinids and protorothyridids, the revision of closely related taxa from North America including studies of the postnatal ontogeny, as well as a phylogenetic analysis of early eureptiles and related taxa will examine the following questions: 1) Are the earliest eureptiles monophyletic or rather a grade leading to the diapsid reptiles? 2) Are ontogenetic trajectories recognizable and useful for an understanding of the biology of early amniotes/eureptiles? 3) Is it possible to develop an explanatory model for the morphological transition leading to the amniote/eureptile anatomy? The results will then be used for fucture investigations, including studies on extant amniotes.