. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. 12 CHELONIA. present, as in the type of T. incrassatus. The neural region of the carapace is depressed. The vertebrae remain on the ventral aspect. PvrcJiased, 1859. Fig. Trionyx (cf.) gergensi.—Carapace ; from the Lower Miocene of the Mayence basin. A The fourth right costal with the sculpture is shown on a larger scale below, nu, nuchal. Trionyx parlsiensis, Meyer \ Known only by a single costal bone, which has a fine sculpture, and is
. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. 12 CHELONIA. present, as in the type of T. incrassatus. The neural region of the carapace is depressed. The vertebrae remain on the ventral aspect. PvrcJiased, 1859. Fig. Trionyx (cf.) gergensi.—Carapace ; from the Lower Miocene of the Mayence basin. A The fourth right costal with the sculpture is shown on a larger scale below, nu, nuchal. Trionyx parlsiensis, Meyer \ Known only by a single costal bone, which has a fine sculpture, and is of considerable thickness, with the free margin abruptly truncated. One of the Hordwell forms may be identical with this species. 1 Paheologica, p. 101 (1832).. 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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