30 NEW YORK STATE MUSEUM 



CONRADELLA Ull'ich & Scofiold 



Conradella compressa Conrad sp. 



P h r a g m 1 i t e s c o m p r e s s u s Conrad. An. geol. rep't. 

 1838. p. 119 



A few epeeimens of this handsome and striking fossil were 

 found in gray ci^stalline limestone pebbles of the Moordener 

 kill conglomerate, and black compact limestone pebbles of the 

 Kysedorph hill conglomei-ate. The specimens do not show any 

 marked difference from the t\i>ical material of this si>ecies in 

 the New York state museum, nor any approach to any of the 

 western species of this genus described by Ulrich. In.New York 

 this form is known only from the Trenton limestone. (Groups 

 5,7) 



CARINAROPSIS Ilall 



Carinaropsis carinata Hall. Pal. N. Y. 1847. 1:183 

 In a pebble of compact black limestone of the Rysedorph hill 

 conglomerate a large Carinaropsis was found associated with 

 numerous cranidia of a Eemopleurides, which in profile and out- 

 line, and specially in the largely expanded ai)erture, and the 

 sudden contraction toward the small incurved apex fully agrees 

 with Carinaropsis carinata Hall, slightly differing in 

 that the carination becomes obsolete near the apertural margin. 

 Several smaller specimens of this rare species were found in the 

 gray crystalline limestone,. and in the compact reddish gray lime- 

 stone a large specimen with very sharply projecting carina and 

 strong concentric corrugations around the aperture. Hall reports 

 this species from the black compact limestone at Middleville and 

 Trenton Falls; while later collectors of Trenton fossils in this 

 state make no mention of it. In the west the genus is repre- 

 sented in the Ti-enton group by several other species. (Groups 



5, 6, 7) 



LOPHOspiRA Whitfield 



Lophospira bicincta Hall sp. 

 M u r c h i s o n i a bicincta Hall. Pal. N. Y. 1847. 1 :177 

 Several casts of large specimens showing distinctly three 

 carinations on the last whorl and the bicarinate upper whorls, 



