Development of the skull of the Hawksbill Seaturtle, Eretmochelys imbricata
Article first published online: 30 JUL 2013
Copyright © 2013 Wiley Periodicals, Inc.
Journal of Morphology
Volume 274, Issue 10, pages 1124–1142, October 2013
How to Cite
Sheil, C. A. (2013), Development of the skull of the Hawksbill Seaturtle, Eretmochelys imbricata. J. Morphol., 274: 1124–1142. doi: 10.1002/jmor.20167
- Issue published online: 10 SEP 2013
- Article first published online: 30 JUL 2013
- Manuscript Accepted: 3 MAY 2013
- Manuscript Revised: 26 APR 2013
- Manuscript Received: 6 JAN 2012
- curator, Division of Herpetology, The University of Kansas
- Eretmochelys imbricata;
The embryonic development of the cranium of the Hawksbill Seaturtle (Eretmochelys imbricata) is described on the basis of cleared and double-stained specimens. Illustrations and descriptions of the chondrocranium at Stage 25 form the basis of comparison with similar data for the Loggerhead Seaturtle, Caretta caretta. Morphological changes through prehatching ontogeny are described for all dermal and endochondral elements of the skull and jaws, and the sequence of appearance and ossification of these elements are compared with similar data for Chelonia mydas, Natator depressa, and Dermochelys coriacea. Comparisons among suggest that a possible remnant of the dorsal edge of the orbital cartilage remains and represents a portion of the posterior orbital cartilage in C. caretta, representing a novel pattern of development for the posterior orbital cartilage for this species. Anatomy of cartilages of the orbitotemporal region are described for E. imbricata and C. caretta. J. Morphol. 274:1124–1142, 2013. © 2013 Wiley Periodicals, Inc.