. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. Suborder PTERANODONTIA. Teeth absent; cranium (fig. 1) with a long, backwardly-pro- duced supraoccipital crest, and nares completely confluent with Fig. Pteranodon longiceps, Marsh.—Left lateral view of skull; from the Cretaceous of North America. TV a, preorbital vacuity; b, orbit; c, supraoccipital crest; d, angle of mandible ; q, quadrate; s, symphysis. (After Marsh.) preorbital vacuity. Scapula generally articulating
. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. Suborder PTERANODONTIA. Teeth absent; cranium (fig. 1) with a long, backwardly-pro- duced supraoccipital crest, and nares completely confluent with Fig. Pteranodon longiceps, Marsh.—Left lateral view of skull; from the Cretaceous of North America. TV a, preorbital vacuity; b, orbit; c, supraoccipital crest; d, angle of mandible ; q, quadrate; s, symphysis. (After Marsh.) preorbital vacuity. Scapula generally articulating with spines of dorsal vertebrae, which are anchylosed together. This Suborder is at present unrepresented in the Collection. Suborder PTEROSAURIA. Teeth in both jaws; cranium without backwardly-projecting supraoccipital crest, and with the nares usually more or less com- pletely separated from the preorbital vacuity. Scapula (at least usually) not anchylosed to spines of dorsal vertebrae, which are distinct from one another; four phalangeals in ulnar digit of maims. Family PTERODACTYLID^E. Tail short; skull bird-like, either long or short; jaws toothed to their anterior extremity; nares usually large, and imperfectly separated from preorbital vacuity ; length of metacarpus considerably exceeding half that of ulna; proximal half of tarsus distinct from tibia. Genus PTENODRACON *, Lydekker. Skull very short, and the muzzle not produced into a rostrum; teeth confined to anterior extremity of jaws; nares and preorbital 1 Seeley (' Ornithosauria,' p. Ill) proposed to use Ornithoecphalus in this sense, an application which has been shown by Zittel (' Palseontographica,' vol. xxix. p. 80) to be inadmissible. b2. 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 British Museum (Natural History). Dept. of Geology; Ly
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