. A descriptive catalogue of the marine reptiles of the Oxford clay. Based on the Leeds Collection in the British Museum (Natural History), London ... Reptiles, Fossil. 94 MAEINE EEPTILES OP THE OXFOED CLAY. skeleton of MurcBnosaurus dnrohrivensis (R. 2863), since no well-preserved examples of these bones in the type species (31. leedsi) are contained in the collection. In M. leedsi the somewhat imperfect and badly-preserved atlas and axis have been described by Professor Seeley *, and, so far as can be seen, differ in no important points from those just noticed (PL IV. fig. 1). The remainder
. A descriptive catalogue of the marine reptiles of the Oxford clay. Based on the Leeds Collection in the British Museum (Natural History), London ... Reptiles, Fossil. 94 MAEINE EEPTILES OP THE OXFOED CLAY. skeleton of MurcBnosaurus dnrohrivensis (R. 2863), since no well-preserved examples of these bones in the type species (31. leedsi) are contained in the collection. In M. leedsi the somewhat imperfect and badly-preserved atlas and axis have been described by Professor Seeley *, and, so far as can be seen, differ in no important points from those just noticed (PL IV. fig. 1). The remainder of the cervical region (PI. IV. figs. 2-4; PL V. figs. 1-3 ; PL VI. figs. 4, 5; text-figs. 50, 51) is characterised by the large number (about 41) of vertebrae composing it and the greater relative length of the centra compared with those of the cervicals in Cryptocleidus and Text-fie. Anterior cervical vertebra of Murmiosaurus durohrivensis : A, from left side ; B, from behind. (E. 2863, about nat. size.) , anterior zygapophysis ; , neural canal; , neural spine ; , posterior zj-gapophysis ; >•./., facet for rib ; s., neuro-central suture. Tricleidus: measurements will be given under the different species. The articular ends of the centra are a rounded oval in outline, with the transverse diameter a little longer than the vertical—this difference being less in the anterior than in the posterior cervicals: there is a slisrht flattenins; beneath the neural canal. The articular faces are gently concave and are surrounded by a sharply defined rounded border; * " On 3Itci-(enosaunis leedsi, a Plesiosaurlan from the Oxford Clay," Quart. Journ. Geol. Soc. vol. xxx. (1874) p. 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;
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectreptile, bookyear1910
