CEPHALOPOUA—AMMONOIDEA. 



209 



Fjg. 1480. Hetei'oceras conradi^ terminal fragment. (After Whitfield, Pal. N. J., II.) 



363. A. subcompressum (Forbes). (Fig. 1481.) Cretacic. 



Oval in section with only the earliest whorls close coiled, the 



Fig. 1 48 1 



Anisoceras subcompressu7n, X Yz-, ^'ith outlines of cross sections. (After 

 Whiteaves, Mes. Foss., I.) 



later crioceran, and finally straight; costae sharp, with wider con- 

 cave interspaces, occasionally bifurcating. 

 Nanaimo of Vancouver. 



