. Bulletin. Natural history; Natuurlijke historie. Fig. 30. Reconstructed skulls of various 'nothosaurs' in dorsal aspect. A, Dactylosaurus after Nopsca (1928b) and Sues and Carroll (1985); B, Simosaurus after Kuhn-Schnyder (1961); C, Corosaurus; D, Ceresiosaurus after Peyer (1931). Compare with Fig. 7. Scale bars = cm. of Carroll and Gaskill (1985), while most recently Sander (1989) has equated all examples of the two genera as specific variants of Neusticosaurus, the name having priority. This interpretation is welcomed and accepted here, although for purposes of clarity, Neusticosaurus a
. Bulletin. Natural history; Natuurlijke historie. Fig. 30. Reconstructed skulls of various 'nothosaurs' in dorsal aspect. A, Dactylosaurus after Nopsca (1928b) and Sues and Carroll (1985); B, Simosaurus after Kuhn-Schnyder (1961); C, Corosaurus; D, Ceresiosaurus after Peyer (1931). Compare with Fig. 7. Scale bars = cm. of Carroll and Gaskill (1985), while most recently Sander (1989) has equated all examples of the two genera as specific variants of Neusticosaurus, the name having priority. This interpretation is welcomed and accepted here, although for purposes of clarity, Neusticosaurus and ''Pachypleurosaurus" are retained as distinct in the present phylogenetic analysis. Serpianosaurus (Fig. 37D), a relatively ple- siomorphic pachypleurosaur from the Grenzbitumen horizon of Monte San Gior- gio, has recently been described by Rieppel (1989) as a close relative of Neusti- cosaurus. Serpianosaurus is a small to intermediate-sized pachypleurosaur with a relatively large skull, straight mandible, and often nonthickened ribs. The history of these taxa and other pachypleurosaurs has been reviewed by Rieppel (1987). A pair of similarly related forms is Nothosaurus and Paranothosaurus (Figs. 31C; 32E; 34D; 35C; 36A, B and E; and 39B). These are large, derived reptiles that are characterized by long, massive skulls with blunt, constricted premaxillae and extremely elongate supratemporal fenestrae. This unique cranial format is readily identifiable, but the skull of Nothosaurus is virtually indistinguishable from that of Paranothosaurus [see, , Kuhn-Schnyder (1966) and Schultze (1970)]. Kuhn-Schnyder (1987), however, indicates that the postfrontal is excluded from the margin of the supratemporal fenestra in Paranothosaurus, in contrast to the. 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
Size: 967px × 2583px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiv, booksubjectnaturalhistory
