The Ornithosauria / An elementary study of the bones of Pterodactyles made from fossil remains found in the Cambridge Upper Greensand, and arranged in the Woodwardian Museum of the University of Cambridge

by H. G. Seeley

PLATE IV.

Humerus.

Fig. 1. A nearly perfect right humerus, from Ashwell. J.a.6, no. 30, p. 38.

2. Same specimen seen from the proximal end, so as to display the distal end, twisted at right angles with the radial crest. The pneumatic foramen is on the anterior and radial side.

3. Proximal end of left humerus showing the radial crest perfect. J.a.6. 25.

4. Articular surface of same specimen showing the termination of the radial crest.

5. Posterior aspect of proximal end of right humerus. The pneumatic foramen is on the posterior and ulnar side.

6. Proximal articular surface of left humerus. J.a.6, no. 2.

7. Distal end of right humerus. J.a.6, no. 29.