88 TRANSACTIONS OF THE 



Lias of England, are occasionally met with in the New 

 Jersey secondary. 



A specimen of the Saurocopros genus is described 

 and figured by Dr. Dekay, Ann. of the Lyc. Nat. Hist. 

 N. York; vol. iii. p. 140, pi. iii. fig. 6. 



We have only further to observe concerning the fos- 

 sil Sauria of the United States, that we possess a curious 

 fossil tooth from South Carolina, presented by Dr. S. 

 Blanding, whose root displays a mode of articulation 

 peculiarly its own, and which may be hereafter found 

 to indicate the type of a new fossil genus of animals. 

 The same may be inferred from numerous fossil verte- 

 brae from the New Jersey secondary formations in my 

 possession, which differ in their structure from any 

 others hitherto described. We have seen in possession 

 of Dr. Dekay, the inferior jaw bone of a nondescript 

 fossil animal found in New Jersey, which bears some 

 analogy with a jaw bone figured in Mr. MantelPs 

 "Geology of the South East of England," p. 153, 

 under the name of 66 Jaw of a Reptile." My friend 

 Dr. Pickering refers this fossil to the jaw of a fish of the 

 genus Sphyr^na, Bl. 



CLASS PISCES. 



ICHTHYOLITES. 



The fossil remains of fish are by no means of rare oc- 

 currence in many parts of the United States, but the 

 observations of our men of science on this subject are 

 not yet sufficiently numerous, or so completely digested, 

 as to enable us to give a scientific classification of them. 



