. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 170 IU'LLETIX: MUSEUM OF COMPARATIVE ZOOLOGY Parrington (1946b, p. 186) as attachments for the rectus capitis anticus muscles. These depressions are relatively much deeper than those of larger specimens. In no. 42877, the left one has a foramen opening' into its lateral wall, facing medially and a little posteriorly. This foramen opens into a canal, which disap-. Fig. 2. Ventral view of restored juvenile skull of liorhinus; X about ; for abbreviations see Fig. 1. pears into the unossified area between
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 170 IU'LLETIX: MUSEUM OF COMPARATIVE ZOOLOGY Parrington (1946b, p. 186) as attachments for the rectus capitis anticus muscles. These depressions are relatively much deeper than those of larger specimens. In no. 42877, the left one has a foramen opening' into its lateral wall, facing medially and a little posteriorly. This foramen opens into a canal, which disap-. Fig. 2. Ventral view of restored juvenile skull of liorhinus; X about ; for abbreviations see Fig. 1. pears into the unossified area between the prootic and basioccipi- tal. The foramen and its canal are formed wholly within the basioccipital. This is certainly the same structure as that de- scribed by AVatson (1913, p. 220) in Diademodon, and is, as he , probably venous. On the posterior slope of each muscle pit is a smaller foramen which is directed towards the occipital condyles. These are also visible in the adult (see PI. ], tig. 2).. 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
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