The Circumorbital Bones of the Gekkota (Reptilia: Squamata)
Article first published online: 20 NOV 2009
Copyright © 2009 Wiley-Liss, Inc.
The Anatomical Record
Volume 293, Issue 3, pages 402–413, March 2010
How to Cite
Daza, J. D. and Bauer, A. M. (2010), The Circumorbital Bones of the Gekkota (Reptilia: Squamata). Anat Rec, 293: 402–413. doi: 10.1002/ar.21039
- Issue published online: 17 FEB 2010
- Article first published online: 20 NOV 2009
- Manuscript Accepted: 20 AUG 2009
- Manuscript Received: 22 JUN 2009
- NSF (Phylogeny and Evolution of the Geckos of the World). Grant Number: DEB 0515909
- cranial osteology;
- CT scan;
- comparative anatomy
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. Anat Rec, 2010. © 2009 Wiley-Liss, Inc.