Fig. 12.

Non-avian reptile scapulae and coracoids. (A) The pseudosuchian (crocodylian) Alligator and (B,C) the lepidosauromorphan (squamate) Shinisaurus. (C) Evidence from an osteological study of Shinisaurus indicates that the procoracoid process of the scapula is derived from a discrete skeletal element, herein considered to be the homologue of the procoracoid (see text for details). Abbreviations: cor (coracoid), pcpr (procoracoid process), pro (procoracoid), scp (scapula). Glenoid shaded, cartilage stippled. Sources for images: (A) Alligator modified from Mook (1921) and reproduced with permission from the American Museum of Natural History; (B) adult and (C) subadult Shinisaurus modified from Postcranial anatomy of Shinisaurus crocodilurus (Squamata: Anguimorpha), J. L. Conrad (in press, ©Journal of Morphology); reprinted with permission of Wiley-Liss, Inc., a subsidiary of John Wiley & Sons, Inc. Not to scale.