568 



NEW YORK STATE MUSEUM 



Schroederoceras cassinense Whitfield (sp.) 



Page 476 



I, 2 Ventral view, showing the strong development of the ventral 

 and lateral faces and section of the same specimen 



Schroederoceras eatoni Whitfield (sp.) 



Page 476 

 See pi. 23, fig. 1 



3 Longitudinal section of a specimen 



4 Transverse section of a fragment 



Tarphyceras seelyi Whitfield (sp.) 



Page 465 



See pi. 19, fig. 1, 2; pi. si, fig. 1; pi. 24, fig. 3 



5 Lateral view of a well preserved specimen showing the earlier 



volutions 



All originals of this plate are from the Fort Cassin beds (A 3 ) of 

 Valcour N. Y. and now in the New York State Museum. 



