28 CRETACEOUS GROUP 
GEOSAURUS. 
Pl,. xi. fig. 10. 
In a memoir lately published,* Dr. Dekay announces | 
the discovery, in New Jersey, of some remains of the 
Geosaurus, a subgenus of Mosasaurus. I have annexed 
an accurate representation of two teeth, with a portion of 
the jaw, which have been kindly lent me for that purpose 
by Dr. Dekay. 
PLESIOSAURUS.? 
Dr. Harlan, (Journ. Acad. Nat. Sciences, vol. iv.) 
describes some remains which he supposes to have be- 
longed to this animal. ‘They consist chiefly of vertebre, 
and are preserved in the collections of the Academy. I 
believe the remains of Plesiosauri have not hitherto been 
found in Europe in any beds more recent than the Oolites. 
A recent inspection of these remains, causes me to en- 
tertain doubts of their belonging to any animal of the 
Saurian order. 
CROCODILE. 
1. Pl. x1. fig. 12, represents a tcoth, found with seve- 
ral others, together with a considerable portion of the 
jaw bone, near White Hill, N.J.in blue marl. (Vide Dr. 
Harlan’s paper, in Journ. Acad. vol. iv. pl. 1.) This 
tooth is longitudinally striated, like those in ‘* Tilgate 
Forest,” pl. v. fig. 2. 9. I found a vertebra of a croco- 
dile in the marl of St. Georges, Delaware. 
* Ann. N. York Lyceum, Vol. iii. 
EES ee ee 
