462 Systematic Paleontology 



This species is named in memory of Kobert PaiT Whitfield. 



The species is rare in a good state of preservation, but determinable 

 fragments are not uncommon in the Monmouth of Brightseat. 



Occurrence. — Monmouth Formation. Brightseat, Prince George's 

 County. 



Collection. — Maryland Geological Survey. 



? Pyrifusus elevata Whitfield 



Turbinopsis elevata Whitfield, 1892, Mon. U. S. Geol. Survey, vol. xviii, 



p. 102, pi. xii, figs. 13, 14. 

 Turbinopsis elevata Johnson, 1905, Proc. Acad. Nat. Sci., Phila., p. 26. 

 Turbinopsis f elevata Weller, 1907, Geol. Survey of New Jersey, Pal., vol. 



iv, p. 797, pi. lxxxiii, figs. 14, 15. 



Description. — " Shell of moderately small size as indicated by internal 

 casts only ; spire elevated, consisting of but few whorls, which in the 

 casts are widely disconnected, indicating a thick shell or whorls discon- 

 nected in the shell itself, which is most probable; volutions rounded above 

 and on the periphery, but compressed and wedge-form below ; aperture 

 elongate-ovate, rounded above, but wedge-shaped below; umbilical open- 

 ing, in the cast, quite large, smooth, not showing any indication of the 

 spiral tooth-like ridge ; surface of the cast showing rather distant vertical 

 folds, but very little indication of spiral stria?, the shell being probably too 

 thick for them to be transmitted to the cast." — Whitfield, 1892. 



Type Locality. — Crosswicks, New Jersey. 



As Weller implied in his discussion of the generic affinities of this cast, 

 it is much easier to state the genus to which the form does not belong than 

 to name that to which it does. The entire absence of columellar plications 

 excludes the species from Modulus. The large umbilical funnel and 

 the apparently heavy shell suggest Pyrifusus, although the spire is rela- 

 tively high and the body whorl low and narrow for that genus. 



Occurrence. — Monmouth Formation. One mile west of Friendly, 

 Prince George's County. 



Collections. — Maryland Geological Survey, Philadelphia Academy of 

 Natural Sciences, New Jersey Geological Survey. 



Outside Distribution. — Monmouth Formation. Navesink marl. New 

 Jersey. 



