Archive image from page 189 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 .. descriptivecatal01brit Year: 1910 160 MAEINE EEPTILES OP THE OXFOED CLAI. The/'org limh (text-fig. 77) is peculiar in several resjjects and differs considerably from that of Cryptocleidus and of Murcenosaurus; its most striking characteristic is that the humerus articulates distally with four bones—three, the radius (r.), ulna {u.), and pisiform [p.), being large, the fourth a small po
Archive image from page 189 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 .. descriptivecatal01brit Year: 1910 160 MAEINE EEPTILES OP THE OXFOED CLAI. The/'org limh (text-fig. 77) is peculiar in several resjjects and differs considerably from that of Cryptocleidus and of Murcenosaurus; its most striking characteristic is that the humerus articulates distally with four bones—three, the radius (r.), ulna {u.), and pisiform [p.), being large, the fourth a small postaxial accessory ossicle {a.). The humerus (A.) is short and stout; the head is rounded in outline and convex ; at its upper anterior border it is continuous with the surface of the strongly developed tuberosity [Lp.). This is bounded both in front and behind by strong ridges, which extend down a little on the shaft; its upper surface is flattened, and a little Test-fip;. 77. Left fore paddle (imperfect) of Trideidns seeleyi, from above. (Type specimeB, E. 3539, about j nat. size.) a., postaxial accessory ossicle; h., humerus ; int., intermedium ; , tuberosity ; , fifth metacarpal; 2., pisiform ; r., radius ; rad., radiale ; u., ulna ; uln., ulnare. below its upper border there is a well-marked rugosity for the attachment of muscle. The stout shaft is oval in section; its anterior border bears a roughened ridge, and the upper part of its ventral and ventral-posterior surface is roughened for muscle- attachments. Distally the bone is expanded and compressed from above downwards. The facet for the radius is the largest, that for the pisiform the smallest; the surface for the accessory ossicle is situated entirely on the postaxial border nearly parallel with the long axis of the bone.
Size: 1171px × 1707px
Photo credit: © Actep Burstov / Alamy / Afripics
License: Licensed
Model Released: No
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
