CRETACEOUS PTERODACTYLES. 379 



Otidbu—FTUEOSJ URIA. 



SUPPLEMENT N o. I. 



PTERODACTYLES OF THE UPPER GREEN-SAND. 



Genus — Pterodactylus, Cuvier. 



In Chapter V, p. 257, of the present work, the occurrence of remains of a large 

 Pterodactyle in the Green-sand formation near Cambridge, is noticed, and portions of 

 the wing-bones are figured in PI. 5, figs. 6 — 8 {Pterosauria). 



Since that chapter was printed off, the Woodwardian Museum of the University 

 of Cambridge has been enriched by successive acquisitions of fossils, obtained from 

 the same stratum of ' Upper Green-sand,' near Cambridge. All those belonging to 

 the Pterosauria have been liberally transmitted to me by my friend Professor 

 Sedgwick for description and illustration in the 'History of British Fossil Reptiles,' 

 and I have subsequently received a few highly interesting additional examples of 

 Pterodactyle remains from sources which will be duly acknowledged in the sequel. 



Pterodactylus Sedgwickii, Owen. Jaws and teeth, PI. 7. 



The specimen (PI. 7, fig. \, a,h, c, d) is the fore part of the upper jaw, contain- 

 ing the first seven sockets of the teeth, in a few of the anterior of which the base of 

 the tooth is retained. The first two sockets open upon the obtuse extremity of the 

 jaw (fig. 1, c), and have a direction showing that their teeth projected obliquely 

 forward, so as to prolong the prehensile reach of the jaw ; the second and third 

 sockets are the largest, and cause a slight transverse swelling (fig. \,h) ; the fourth is 

 suddenly smaller, and the three following retain nearly the same size, or show a slight 

 increase as they pass backward. The apertures of the sockets are eUiptic, with the 

 long axis extending obliquely from before outward and backward, not parallel with 



2 h 



