. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Thecodontosaums and Palteosaurus. 157 No. 97 is an instructive fragment (fig. 7), showing the articular end of the scapula in an uncompressed Humeral articular surface. Scapula of Pal<so$mirus. Erist. Mus. no. 97. ^ nat, size. The principal specimen, no. 89, is exposed on the internal aspect, and consequently shows no indication of tlie articular surface and only a slight film of the coracoid and a portion of the impression from which the bone is lost. The scapu
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Thecodontosaums and Palteosaurus. 157 No. 97 is an instructive fragment (fig. 7), showing the articular end of the scapula in an uncompressed Humeral articular surface. Scapula of Pal<so$mirus. Erist. Mus. no. 97. ^ nat, size. The principal specimen, no. 89, is exposed on the internal aspect, and consequently shows no indication of tlie articular surface and only a slight film of the coracoid and a portion of the impression from which the bone is lost. The scapula is concave in length on the posterior surface, with a sharp ante- rior border, wliich was reflected outward in the region in which the thickening of the anterior crest of the scapula is usually found. The bone does not appear to have been more than b\ inches long; it is 1^ inch wide towards the free end, 1 inch wide in tlie middle, 2yQ inches wide towards tlie humeral articulation ; but it is fractured in front, and probably had a width of 3^ inches. The coracoid is very imperfectly indicated in this and the other specimens in which it appears to be partially preserved. The substance of the coracoid is Y^ inch thick, which is only half the thickness of the fractured anterior margin of the scapula. There is some indication that the surfaces of scapula and coracoid, which contributed to make the articulation for the humerus, met each other at an angle. Both these surfaces exceed an inch in length. There is a slight eminence on the surface on the cast in the region of the coracoid, which may indicate a foramen. It seems probable that the scapulse here referred to belong to different species ; and it might be anticipated that Palceosaurus will have a comparatively large and strong articulation in the shoulder-girdle when compared with Thecodontosaums. It is possible that the bone no. 90 may pertain to the latter genus. Please note that these images are extracted from scanned pag
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