. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. Anatomy of Eocaecilia micropodia 'Jenkins, Walsh, and Carroll 305. cul pr^ st-q Figure 12. Eocaecilia micropodia, MCZ 9242, disarticulated elements of skull. rangement in most modern forms. Slightly anteroventral to the jugular foramen is a small carotid foramen. The ventral portion of the os basale in- corporates the parasphenoid and is config- ured accordingly: posteriorly broad in the region of the otic capsules and anteriorly narrow in the region representing the cul- triform process (Figs. IB, 3). At the
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. Anatomy of Eocaecilia micropodia 'Jenkins, Walsh, and Carroll 305. cul pr^ st-q Figure 12. Eocaecilia micropodia, MCZ 9242, disarticulated elements of skull. rangement in most modern forms. Slightly anteroventral to the jugular foramen is a small carotid foramen. The ventral portion of the os basale in- corporates the parasphenoid and is config- ured accordingly: posteriorly broad in the region of the otic capsules and anteriorly narrow in the region representing the cul- triform process (Figs. IB, 3). At the an- terior border of the otic capsule, where the os basale narrows abruptly, one might ex- pect to find a basicranial articulation with the pterygoid (as is common in Recent caecilians, Fig. 18E); no such articulation is discernible in Eocaecilia (Figs. 15A, 16, 17). The dorsal surface of the area repre- senting the cultriform process bears a groove adjacent to the lateral margins for the articulation of the sphenethmoid (gr art sph, Fig. 12). The dorsal surface of the os basale is also marked by three depres- sions. The largest of these extends from the posterior margin of the braincase ros- trally to the posterior terminus of the grooves for the sphenethmoid. At the ros- tral end of the depression is an elevated, hemicircular margin set transversely across the cultriform process that defines a very shallow basin (b cul pr, Fig. 12). Anterior to this depression are two additional shal- low fossae, one on each side of the mid- Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
Size: 1651px × 1514px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
