. Breviora. OPS. Figure 6. Basioccipital of Stereophallodon in A) posterior, B) right lateral, C) dorsal, and D) ventral view. Drawing based on MCZ 6348. Abbreviations: BS S, basi-parasphenoid sutural surface; OP S, opisthotic sutural surface; VAG F, medial edge of vagus foramen; XII, foramen for twelfth cranial nerve. flattened inferiorly. Also, in both genera, the ventral surface is marked by a series of ridges and grooves between the basioccipital tubercula. In Dimetrodon and Edaphosaurus, no ridges are present on the ventral surface of the basioccipital between the basioccipital tubercula.
. Breviora. OPS. Figure 6. Basioccipital of Stereophallodon in A) posterior, B) right lateral, C) dorsal, and D) ventral view. Drawing based on MCZ 6348. Abbreviations: BS S, basi-parasphenoid sutural surface; OP S, opisthotic sutural surface; VAG F, medial edge of vagus foramen; XII, foramen for twelfth cranial nerve. flattened inferiorly. Also, in both genera, the ventral surface is marked by a series of ridges and grooves between the basioccipital tubercula. In Dimetrodon and Edaphosaurus, no ridges are present on the ventral surface of the basioccipital between the basioccipital 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. , Museum of Comparative Zoology, Harvard University
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