Archive image from page 203 of A descriptive catalogue of the. A descriptive catalogue of the marine reptiles of the Oxford clay. Based on the Leeds Collection in the British Museum (Natural History), London .. descriptivecatal02brit Year: 1910 Hi MAE1NE EEPTILES OF THE OXFORD CLAY. border. The acetabular border is smootb, with the acetabular surface opposite the posterior union with the ischium running well up on to the outer face of the bone; from this surface the articulations for the upper end of the anterior process of the ischium and for the upper end of the pubis are separated by a not
Archive image from page 203 of A descriptive catalogue of the. A descriptive catalogue of the marine reptiles of the Oxford clay. Based on the Leeds Collection in the British Museum (Natural History), London .. descriptivecatal02brit Year: 1910 Hi MAE1NE EEPTILES OF THE OXFORD CLAY. border. The acetabular border is smootb, with the acetabular surface opposite the posterior union with the ischium running well up on to the outer face of the bone; from this surface the articulations for the upper end of the anterior process of the ischium and for the upper end of the pubis are separated by a notch, and form a broad smooth area above the anterior part of the acetabular border extending to the antero- ventral angle. The surface for union with the ischium is much roughened, and there seems to be no doubt that in front of it there is a surface for independent union with the upper end of the pubis. The inner face of the ilium (text-fig. 72) is convex : towards its upper border it bears two surfaces (, ) for union with the Text-fis. 71. Outer side of left half of pelvis of Ifetriorhynchus moreli. (R. 2054, nat. size.) (7.(i., anterior angle of ilium ; acet, acetabulum ; , anterior process of ischium ; il., ilium; is., ischium ; pu., pubis. outer ends of the sacral ribs; the upper part of the surface for the first sacral forms a deep fossa beneath the dorsal border. The surface for the second sacral rib extends nearly down to the postero-inferior angle. The ischium (is., text-figs. 71, 72) in its general form is much like that of Steneosaurus, the chief difference being in the relatively rather smaller size of its anterior process. Ventrally the broad expanded blade bears a slightly curved oblique sutural surface [) for union with its fellow. The neck is less sharply defined than in Steneosaurus, the bone narrowing gradually to just below the proximal articulation, which bears a surface for union with the posterior portion of the ventral
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Keywords: 1900, 1910, andrews_charles_william_1866_1924, archive, book, bookauthor, bookcentury, bookdecade, bookpublisher, booksubject, bookyear, british_museum_natural_history_dept_of_geology, drawing, historical, history, illustration, image, london_printed_by_order_of_the_trustees, page, picture, print, reference, reptiles_fossil, vintage
