. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. C 0 Figure 12. Frontals of recent and fossil anguids in dorsal view. A, Pancelosaurus piger, n. gen., (Bison Basin), MCZ 3496; B, Gerrfionofus liocephalus, Recent, MCZ 24518; C, Dlp/og/ossus hewardii, Recent, MCZ 7356; D, P. piger (Hell Creek Formation, Montana), MCZ 3499. Note close resemblance between A and C. All X 4. and arrangement of epidermal scales and in osteoscutal sculpture. (3) The diploglossines exhibit a num- ber of apparently primitive cranial charac- ters, as indicated by the close resemblance between
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. C 0 Figure 12. Frontals of recent and fossil anguids in dorsal view. A, Pancelosaurus piger, n. gen., (Bison Basin), MCZ 3496; B, Gerrfionofus liocephalus, Recent, MCZ 24518; C, Dlp/og/ossus hewardii, Recent, MCZ 7356; D, P. piger (Hell Creek Formation, Montana), MCZ 3499. Note close resemblance between A and C. All X 4. and arrangement of epidermal scales and in osteoscutal sculpture. (3) The diploglossines exhibit a num- ber of apparently primitive cranial charac- ters, as indicated by the close resemblance between their individual skeletal elements and those of Pancelosaurus piger. (4) The osteoscutes of Pancelosaurus piger are essentially the same as those found in Gerrhonotus and Ophisaurus, and unlike those of Diploglossus. (5) Pancelosaurus piger exhibits the greatest number of fundamental characters in common with Anguis and the ophisaurs, and is referred to the subfamily Anguinae. (6) Among the large early Tertiary anguids, Pancelosaurus piger resembles Xestops vagans most closely. Pancelosaurus pawneensis (Gilmore 1928) Xestops? pawneensis Gilmore 1928 Holotype. KU 1281. Gilmore based this species on the "median section of an artic- ulated skull, with median part of attached. 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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