Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ..By Richard Lydekker .. . ing gradually at both extremities. The dimensions of one of the later cervical vertebra) of the type skele-ton are:—length 0,041 (1-6 inches), height 0,086 (3-1 inches), midwidth 0,000 (3-0 inches); the length being less than half the width. All the known examples are from the Kimeridge (lav. 11(d). Europe (England). 1 Odontography, pt. ii. p. 283 (1841). 2 Trans. Geol. Soc. scr. 2, vol. i. pt. ii. p. 080 (1824).—Insufficiently charac-terized. 124 SAUKOPTEKYGIA. 46796. A considerabl
Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ..By Richard Lydekker .. . ing gradually at both extremities. The dimensions of one of the later cervical vertebra) of the type skele-ton are:—length 0,041 (1-6 inches), height 0,086 (3-1 inches), midwidth 0,000 (3-0 inches); the length being less than half the width. All the known examples are from the Kimeridge (lav. 11(d). Europe (England). 1 Odontography, pt. ii. p. 283 (1841). 2 Trans. Geol. Soc. scr. 2, vol. i. pt. ii. p. 080 (1824).—Insufficiently charac-terized. 124 SAUKOPTEKYGIA. 46796. A considerable portion of the skeleton; from the KimeridgeClay of Swindon, Wiltshire. The bones remaining are asfollows :—The nearly entire mandible, with the anteriorportion of the cranium in apposition. The centra of twocervical and of two anterior dorsal vertebrae, and the neuralarches and spines of two vertebrae. Fragments of thepectoral girdle : the imperfect humerus of either side ; thesomewhat imperfect femora; the united tibia and fibula ofone side ; the tibia of the opposite side ; and a number ofFig. Pliosaurus (cf.) brachydirus.—The crown of a tooth ; from theKimeridge Clay of Ely. ^.tarsal and a few phalangeal bones. Compared with thebones of the type skeleton figured by Phillips in his Geology of Oxford, pp. 342 et seq., the following pointsmay be noticed. The total length of the mandible is alittle short of five feet, about one fifth] of this lengthbeing formed by the symphysis; and these dimensionscoincide very closely with those of the type mandible. Thenumber of the teeth cannot be determined. One of thecervicals (b) is from the middle region of the neck, and,although much broken, shows that the contour of theterminal faces was subcircular. The second cervical (a),which is also crushed, has its terminal faces transverselyellipsoidal, and appears to have been later in the series;it apparently closely resembles the type anterior cervicalrepresented in fig. 38, sh
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