Identifier: catalogueoffossi02bri (find matches)
Title: Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ... By Richard Lydekker ..
Year: 1888 (1880s)
Authors: British Museum (Natural History). Dept. of Geology Lydekker, Richard, 1849-1915
Subjects: Reptiles, Fossil Amphibians, Fossil
Publisher: London, Printed by order of the Trustees
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library
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rface smooth; their terminal faces onlyslightly cupped, transversely ellipsoidal, and somewhat angulatod.Dorsals with longer centra, having nearly flat terminal faces, andforward overhang of upper part. Pectoral girdle of the general typeof Pliosaurus, with a small triangular omostornum between theventral plates of the scapula) (fig. 48), which have a strong ridge 1 Quart. Journ. Geol. Soc. vol. xlv. p. 49 (1889). 152 SATJKOPTERYGTA. dividing the ventral from the dorsal portion, and are thus more ofthe type of Thaumatosaurus. Pelvis (figs. 53, 54) like that ofPliosaurus, the pubis and ischium uniting to form an obturatorforamen. Relative lengths of humerus and femur unknown.Humerus articulating distally with only the radius and ulna, whichare relatively short, and separated only by a small interval (fig. 52) ;ulna and fibula subreniform, the former being considerably thelarger of the two. This genus may have been directly derived from the Longiros-trine group of Plesiosaurus. Fig. 49.
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Peloneustes philarchus.—Dorsal aspect of the coracoids; from the Oxford Clay of Bedford. Reduced, gl, glenoid cavity. (This and the preceding figure from the Quart. Joum. Geol. Soc.) Peloneustes sequalis (Phillips1). Syn. Pliosaurus cequalis, Phillips2.Pliosaurus sterrodirus, Seeley3. Imperfectly known. Cervical vertebrae with the neural canal•sunk into the centrum, and the pectorals with distinctly concaveterminal faces. Larger than typical examples of the next species. This species was founded upon a femur (fig. 50) from the Kime-ridge Clay of Oxfordshire, which so closely resembles the corre-sponding bone of P.jihilarchus as to indicate its generic identity; the 1 Geology of Oxford, p. 365 (1871).—Plesiosaurus. 2 Loc. cit. 3 Index to Ayes &c. in Cambridge Museum, p. 98 (1869).—No description. PLESI0SATJKIDJE, 153 length of this specimen is 0,572 (23 inches). The undermentionedvertebrae agree in relative size with this femur, and in genericcharacters with those of the ty
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