Origin of postcranial skeletal pneumaticity in dinosaurs
Version of Record online: 18 JUL 2006
Volume 1, Issue 2, pages 80–85, June 2006
How to Cite
WEDEL, M. J. (2006), Origin of postcranial skeletal pneumaticity in dinosaurs. Integrative Zoology, 1: 80–85. doi: 10.1111/j.1749-4877.2006.00019.x
- Issue online: 18 JUL 2006
- Version of Record online: 18 JUL 2006
The sauropodomorph Thecodontosaurus caducus and theropod Coelophysis bauri are the earliest known dinosaurs with postcranial skeletal pneumaticity. In both taxa, postcranial pneumatic features are confined to the cervical vertebrae. This distribution of pneumaticity in the skeleton is most consistent with pneumatization by diverticula of cervical air sacs similar to those of birds. Other hypotheses, including pneumatization by diverticula of the lungs, larynx and trachea, or cranial air spaces, are less well-supported.