. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. 16 ANOMODONTIA. Family DICYNODONTID^. Intra-alveolar surfaces of palate and mandible without teeth; alveolar margins of jaws trenchant; nares lateral; temporal arcade very slender ; posterior nares more backward than in the Endothi- odontidce, and the palatines less incurved. The prefrontals are very small, and the lachrymal has its duct situated within the cavity of the orbit. The quadrate has no antero- posterior perforation. Pig. Dicyn
. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. 16 ANOMODONTIA. Family DICYNODONTID^. Intra-alveolar surfaces of palate and mandible without teeth; alveolar margins of jaws trenchant; nares lateral; temporal arcade very slender ; posterior nares more backward than in the Endothi- odontidce, and the palatines less incurved. The prefrontals are very small, and the lachrymal has its duct situated within the cavity of the orbit. The quadrate has no antero- posterior perforation. Pig. Dicynodont (JPtychosiagum, sp.).—Dorsal aspect of the cartilage bones of the right side of the pectoral girdle ; from the Karoo system of the Cape. j. sc, scapula; a, acromial process of ditto; cor, coracoid ; , precoracoid. Genus DICYNODON, Owen \ The type genus. Skull vaulted, with a pair of tusk-like maxillary teeth, growing from persistent pulps ; a more or less narrow parietal bar ; orbits of variable direction ; and the palate carrying one ridge on the vomer, and a pair of ridges on the premaxillae. General contour of cranium of a normal type, the parieto-frontal plane being continued by a more or less marked curve into that of the naso- premaxillary region; supratemporal fossae more or less elongated; preorbital region comparatively short, with the nares near the 1 Quart. Joum. Geol. Soc. vol. i. p. 318 (1845); and Trans. Geol. Soc. ser. 2, vol. vii. p. 59 (1845).. 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; Lydekker, Richard, 1849-1915. London, Printed by order of the Trustees
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