. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. ACICHELYID^J. 153 perfectly ossified distally ; neurals with short antero-lateral surfaces; middle and hinder neurals forming a strongly marked tectiform ridge, with a chevron-like (/^) cross-section ; 5th neural (fig. 37) with postero-lateral surface deeply excavated for the reception of a process of the costal. Vertebral shields broad, with the periphery of the underlying areas very boldly fluted. On the ventral aspect of the anterior neura
. Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ... Reptiles, Fossil; Amphibians, Fossil. ACICHELYID^J. 153 perfectly ossified distally ; neurals with short antero-lateral surfaces; middle and hinder neurals forming a strongly marked tectiform ridge, with a chevron-like (/^) cross-section ; 5th neural (fig. 37) with postero-lateral surface deeply excavated for the reception of a process of the costal. Vertebral shields broad, with the periphery of the underlying areas very boldly fluted. On the ventral aspect of the anterior neurals the antero-lateral surfaces become very large, thus indicating an approximation to the Fig. Pelobatochelys blakei—The fifth neural bone ; from the Kimeridge Clay of Dorsetshire, f. A specimen from the Kimeridge Clay of Weymouth, formerly in the collection of the late Mr. Damon, shows the contour of the entire carapace, although the individual bones are not definable. The contour is cordiform, and the neural region forms a sharp ridge, with the costals sloping away like the sides of a roof. Pelobatochelys blakei, Seeley \ The type and only described species. Attains large dimensions, but is very imperfectly known. Hab. Europe (England). R. 2. Fragment of the anterior portion of the carapace, showing the {Fig.) first three neurals and parts of the adjacent costals, of an immature individual; from the Kimeridge Clay of Wey- mouth, Dorsetshire. One of the types ; figured by Seeley in the ' Quart. Journ. Geol. Soc' vol. xxxi. pi. xiii. fig. 1. On the ventral aspect the anterior lateral facets of the second and third neurals exceed half the length of the postero-lateral facets; whereas in the type of Acichelys redenbacheri figured by Meyer in his ' Eept. Lith. Schiefer,' pi. xxi. fig. 4, there are no distinct antero-lateral facets. Purchased, 1880. 1 Quart. Journ. Geol. Soc. vol. xxxi. p. 234 (1875).. Please note that these images are extracted from scanned page images that
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