MOUNT LAUREL-NAVESINK. 107 



VERTEBRATA. 



Fish vertebrae. 

 Bone of reptile. 

 Coprolite. 



In a marl pit at Middletown (Locality 113), a little more than 

 y 2 mile west of the railroad station, the sandy Mount Laurel 

 bed (us 1 ) is poorly exposed in the gullies by the roadside, the 

 typical Navesink (ii3 2 ) being well shown in the excavation a 

 little higher up. 



Locality uj 1 . This bed is more or less calcareous, with 

 rounded quartz pebbles the size of peas. The exposure is hot 

 well adapted for the collection of fossils and only a few species, 

 all more or less fragmentary, have been identified, as follows : 



PELECYPODA. 



Gryphaea sp. 

 Hxogyra costata Say. 

 Pecten sp. 

 Gastrochaena ? (tube). 



GASTROPODA. 



Anchura pennata Mort. 

 Pyrifusus mullicaensis (Gabb). 



Locality uj 2 . The fossils here occur in a grayish, greensand 

 marl, which has been dug for fertilizing purposes. The species 

 which have been identified are as follows : 



BRACHIOPODA. 



Terebratella plicata Say. 



PELECYPODA. 



Cucullaea neglects Gabb. 

 Ostrea mesenterica Mort. 

 Gryphaea convexa Mort. 

 Hxogyra costata Say. 



