. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. 168 LABYKINTHODONTIA. rently a vomer) exhibiting denticules and two tusks. Original from Nyfan; figured by Fritsch, op. cit. pi. lxii. figs. 3, 4. Purchased, 1888. Fig. Nyrania trachystoma.—Frontal aspect of the cranium ; from the Gaskohle of Bohemia. ^. im, premaxilla; m, maxilla ; JV, nasal; L, lachrymal; /, frontal; Pf, prefrontal; Ptf, postfrontal; Pto, postorbital; Pa, parietal; OS, supraoccipital; sq, squamosal; Squ, supratemporal;
. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. 168 LABYKINTHODONTIA. rently a vomer) exhibiting denticules and two tusks. Original from Nyfan; figured by Fritsch, op. cit. pi. lxii. figs. 3, 4. Purchased, 1888. Fig. Nyrania trachystoma.—Frontal aspect of the cranium ; from the Gaskohle of Bohemia. ^. im, premaxilla; m, maxilla ; JV, nasal; L, lachrymal; /, frontal; Pf, prefrontal; Ptf, postfrontal; Pto, postorbital; Pa, parietal; OS, supraoccipital; sq, squamosal; Squ, supratemporal; ep, epiotic; QJ, quadratojugal; J, jugal. (After Fritsch.) Genus ICHTHYERPETUM, Huxley1. Syn. Erpetocephalus, Huxley2. Apparently very closely allied to Nyrania, but the epiotic cornua less produced laterally, and the orbits relatively larger. Palate unknown. Whether these slight differences are sufficient to justify the generic distinctness of Nyrania may be doubtful. The present genus was founded upon the evidence of the vertebral column, while Eupetocejphalus was based upon that of the skull, but it was sug- gested in the original description that the two might prove to be identical. 1 Trans. Boy. Irish Academy, vol. xxiv. p. 367 (1867). Ichthyerpeton. Amended from Rid. p. 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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