1 70 CRETACEOUS PALEONTOLOGY. 



PELECYPODA. 



Ostrea bryani Gabb? 

 Gryphaeostreavomer (Mort.) 

 Polorthws tibialis (Mort.) 



CRUSTACEA. 



Scalpellum conradi Gabb. 



Locality Ip6. Along a small stream northwest of Alloway 

 station, the Vincentown formation is well exposed. In places it is 

 a hard yellow limestone, and has been quarried for the purpose of 

 burning" into lime, and from one such quarry, 1.5 miles northwest 

 of the station, the following fossils have been identified : 



ANTHOZOA. 



Undetermined coral. 



PELECYPODA. 



Nemodon sp. 



Area sp. 



Gryphaeostrea vomer (Mort.) 



Pecten sp. 



Cardium knappi n. sp. 



Caryatis veta Whitf. 



GASTROPODA. 



Calyptraea sp. 



Several undetermined species. 



ANALYTICAL DISCUSSION OF THE VINCENTOWN FAUNA. 



There are really two faunas to be considered in this discussion,, 

 or at least two quite distinct facies of the same fauna, one occur- 

 ring in the sand and the other in the calcareous facies of the 

 formation. The fauna of the sand is especially characterized by 

 Terebratula harlani, this species being present throughout the 

 entire formation, wherever fossils occur, and it is usually asso- 

 ciated with more or less imperfectly preserved casts of a species 

 of Gryphaea. This association of species is essentially the same 



