156 CRETACEOUS PALEONTOLOGY. 



the southwestern extension of the Red Bank sand assumes a more 

 and more marly character, becoming a nearly pure greensand 

 marl opposite Hornerstown, it is not possible to draw a line to 

 separate this marl from the subjacent formation in this region. 

 The fossils in the following list were collected from beds along 

 the creek just below the extensive marl pits which were formerly 

 operated near Hornerstown, and are from strata which lie beneath 

 the beds which have been excavated. The same fossils, however, 

 are highly characteristic of the Hornerstown marl in J. S. Cook's 

 pits near Tinton Falls, where the marl bed is distinctly above the 

 Tinton beds, and consequently the fossil-bearing beds near 

 Hornerstown are included in the Hornerstown formation. The 

 known fauna consists of only three recognized forms, as follows : 



PElvECYPODA. 



Cucullaea vulgaris Mort. 

 Cucullaea compressirostra Whitf. 



GASTROPODA.' 



Turritella sp. 



Locality 14,2. On Crosswicks Creek, about I mile north of 

 New Egypt, the Hornerstown marl has been extensively dug in 

 the marl pits of George Hartshorn. Several layers may be dis- 

 tinguished at this point, as follows: 



I42 1 . The lower portion of the Hornerstown formation at this 

 locality is a pure greensand marl, which has been excavated to 

 a depth of 10 feet or more, although at the time the locality was 

 visited by the writer the pits were filled with water. Several 

 large piles of the excavated marl, however, were available for 

 examination and the fauna recorded in the following list of 

 species was collected : 



ANTHOZOA. 



Flabellum mortoni Vaughan. 



BRACHIOPODA. 



Terebratulina atlanticum (Mort.). 



