. 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. Chevrons of Steneosaurus leedsi: A, anterior chevron from side ; B, anterior chevron from front • C. middle chevron from side ; D, posterior chevron from front; E, posterior chevron from side. (B. 3S06. | nat. size.) /., facet for union with the caudal centra. the leg of the Y is long and fairly stout; the arms of the Y terminate above in an oblique convex facet, in front of and behind which there is a small prominence. Further
. 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. Chevrons of Steneosaurus leedsi: A, anterior chevron from side ; B, anterior chevron from front • C. middle chevron from side ; D, posterior chevron from front; E, posterior chevron from side. (B. 3S06. | nat. size.) /., facet for union with the caudal centra. the leg of the Y is long and fairly stout; the arms of the Y terminate above in an oblique convex facet, in front of and behind which there is a small prominence. Further back the lower arm of the Y is shorter and more compressed laterally (text-fig. 40, C). In the posterior chevrons (text-fig. 40, D, E) also the ventral arm is greatly compressed and at the same time elongated, so that it extends considerablv both in front of and behind the supporting arms, thus giving the bone, as seen from the side, the form of an axe-head : this form of chevron seems to have continued backwards to within a few vertebree of the end of the tail. Shoulder-girdle and Fore Limb (text-figs. 41-42).—The shoulder-girdle (text-fig. 41) does not differ in any important character from that of the recent Crocodiles. It PART II. 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; Andrews, Charles William, 1866-1924. London, Printed by order of the Trustees
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectreptile, bookyear1910
