. 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. STENEOSAUEUS. 95 differ in the various species: these differences will be referred to below. The remainder of the cervical series consists of eight vertebrae (text-fig. 35) probably in all cases, though in some specimens one or more may be missing. These, like the atlas and axis, differ from one another in the various species to a considerable degree, particularly in the length of the centrum in proportion to its other dimensio
. 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. STENEOSAUEUS. 95 differ in the various species: these differences will be referred to below. The remainder of the cervical series consists of eight vertebrae (text-fig. 35) probably in all cases, though in some specimens one or more may be missing. These, like the atlas and axis, differ from one another in the various species to a considerable degree, particularly in the length of the centrum in proportion to its other dimensions, and in the height of the neural spine. Speaking generally, the centra have slightly concave articular ends, the posterior concavity being the deeper; the concavity is most Text-fig. ax. Middle cervical vertebras of Steneosaurvs leeclsi : A, from left side ; B, from behind. (E. 3806, i nat. size.) Also of Stcneosaurits durobrivensis : C, from left side ; D, from behind. (E. 3701, | nat. size.) , anterior zygapophysis ; dp., diapophysial process ; neural spine; pp., parapophysial process ; , posterior zygapophysis. marked in the middle, the edges being flat or even a little convex in some cases. The <nds of the centra are nearly circular in outline, the vertical diameter being a little the greater; as a rule, the upper border is a little flattened beneath the neural canal. The sides of the centra are strongly concave from before backwards, and near the sharply defined edges of the articular surfaces bear numerous fine plications. The. 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; Andrews, Charles William, 1866-1924. London, Printed by order of the Trustees
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectreptile, bookyear1910
