The phylogeny and paleobiology of the early Reptilia

Eureptilia的起源和早期进化是一个主要的分支，包括蛇，恐龙和鸟类等常见动物，仍然没有令人满意的理解。基生真隐翅虫目前被细分为captorhinids和protorothyridids，但两者的单系性尚不清楚，可能有些分类群与更知名的双壳爬行动物关系更密切。对图林根下二叠统迄今为止尚未完全了解的分类群Thuringgothyris的新发现标本的调查，其解剖学似乎介于captorhinids和protorothyridids之间，对北美密切相关的分类群的修订，包括出生后个体发育的研究，以及对早期eureptiles和相关分类群的系统发育分析，将研究以下问题：1）最早的真足类是单系的还是一个导致双足类爬行动物的等级？2)个体发育轨迹可识别和有用的生物学的理解，早期Eupotes/Eureptiles？3)是否有可能建立一个解释性的模型，用于解释从形态学上的转变到眼/眼的解剖结构？然后将结果用于结构调查，包括对现存植物的研究。

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.