. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. 244 DINOSATJKIA. carina. Teeth (fig. 50) simpler than in Iguanodon, with lozenge-shaped crowns, and the inferior surface of the root of each tooth bearing a groove for the reception of the summit of the tooth below. Hadrosaurus is identified with Trachodon by Leidy in the < Proc. Ac. Nat. Sci. Philad.' for 1868, p. 199; the type tooth of the latter being figured by him in the * Trans. Amer. Phil. Soc' vol. xi. pt. 2, pi. x. figs. 1-6 (1859
. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. 244 DINOSATJKIA. carina. Teeth (fig. 50) simpler than in Iguanodon, with lozenge-shaped crowns, and the inferior surface of the root of each tooth bearing a groove for the reception of the summit of the tooth below. Hadrosaurus is identified with Trachodon by Leidy in the < Proc. Ac. Nat. Sci. Philad.' for 1868, p. 199; the type tooth of the latter being figured by him in the * Trans. Amer. Phil. Soc' vol. xi. pt. 2, pi. x. figs. 1-6 (1859). Trachodon foulki, Leidy \ Syn. Hadrosaurus foulki, Leidy 2. The distinction from T. mirabilis of the Judith- River beds is not very apparent. Estimated length 28 feet. Hah. North America. Fig. Trachodon foulki.— Tooth; from the Upper Cretaceous of New Jersey, R. 1007. Transverse section of a tooth; from the Upper Cretaceous of Huddersfield, New Jersey, The dentition is figured by Leidy in his ( Cretaceous Eep- tiliaof the United States' (Smiths. 1864), pi. xiii., from which fig. 50 is copied. Presented by Sir B. Owen, , 1884. Trachodon cantabrigiensis, Lydekker3. Nearly of the dimensions of , Fig. 51. but with the crowns of the teeth rela- tively broader. Hab. Europe (England). R. 496. A tooth, wanting the base of (Fig.) the root; from the Cam- bridge Greensand. The type specimen (woodcut, fig. 51); figured by Owen in his ' Cre- taceous lleptilia' (Mon. Pal. Soc), suppl. ii. pi. vii. figs. 16, 17, as Iguanodon man- Pbilad. for 1858, p. 218 (185'. 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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