CONICET, Instituto de Herpetología, San Miguel de Tucumán, Argentina.
Anat Rec (Hoboken). 2010 Mar;293(3):402-13. doi: 10.1002/ar.21039.
The enormous variation of the orbit in lepidosaurs is better conceptualized in terms of composition and configuration. Broadly, the orbit varies from having totally closed rim to being open posteriorly. Two processes are responsible for changes in the components of the circumorbital series, element loss and fusion. The resulting contacts among elements are the main factors determining orbital configuration. Here, we present a revision of the gekkotan circumorbital bones in the general context of the Lepidosauria. From observations of a sample of 105 species of gekkotans prepared using different techniques, we describe the main changes in the orbit and corroborate the presence or absence of some of the ambiguous elements such as the lacrimal and the jugal. The supraorbital bones of squamates are reviewed and some problems of homology are evaluated using recent phylogenenetic hypothesis.
在有鳞目动物中，轨道的巨大变化最好从组成和构型的角度来理解。广义上，轨道从完全封闭的边缘到后部开放。两个过程负责改变眼眶系列的组成部分，即元素缺失和融合。由此产生的元素之间的接触是决定轨道构型的主要因素。在这里，我们在有鳞目动物的一般背景下对壁虎类的眶周骨骼进行了修订。通过对使用不同技术制备的 105 种壁虎类样本的观察，我们描述了轨道的主要变化，并证实了一些有争议的元素（如泪骨和颧骨）的存在或缺失。对有鳞目动物的眶上骨进行了综述，并利用最近的系统发育假说评估了一些同源性问题。
