28 U.S. NATIONAL MUSEUM BULLETIN 262 



Caseoceras --Continued 



nitidum ? Ulrich, Foerste, and Miller 



Ulrich, E. O., et al., 1943: p. 77, 78, pi. 41, figs. 1, 2. 

 Figured specimen 108302 



Oneota Horiz. Missouri 



? sequatchiense Ulrich, Foerste, and Miller 



Ulrich, E. O., et al., 1943: p. 78, pi. 39, figs. 5, 6. 

 Holotype 108303 



Chepultepec Dol. Tennessee 



subconicum Ulrich, Foerste, and Miller 



Ulrich, E. O., et al., 1943: p. 78, 79, pi. 40, figs. 1, 2. 

 Holotype and paratype 108304a, b. 



Gasconade Dol. Missouri 



Unklesbay, A. G., 1954: p. 646, 647, pi. 68, fig. 17. 

 Hypotype 123411 



Tanyard Fm„ Threadgill Mbr. Texas 



subconicum ? Ulrich, Foerste, and Miller 



Ulrich, E. O., et al., 1943: p. 78, 79, pi. 40, figs. 3, 4. 

 Figured specimen 108305 



Gasconade Dol. Missouri 



sp. 



Cloud, P. E., Jr., and Barnes, V. E., 1948: p. 450, pi. 39, figs. 



28, 29. 

 Figured specimen 140105 



Tanyard Fm., Staendebach Mbr. Texas 



Cloud, P. E., Jr., and Barnes, V. E., 1948: pi. 39, fig. 28. 

 Figured specimen 140106 



Tanyard Fm., Threadgill Mbr. Texas 



Cassinoceras 



arkansasense Ulrich, Foerste, and Miller 



Ulrich, E. O., et al., 1943: p. 38, pi. 15, fig. 3; pi. 16, figs. 1-3. 

 Holotype and paratype 108241a, b 



Black Rock Fm. Arkansas 



explanator (Whitfield) 



Ulrich, E. O., et al., 1943: p. 35, 36, pi. 10, figs. 1, 2; pi. 11, fig. 1; 

 pi. 12, fig. 1. 

 Hypotypes 25776, 59463, 59464, 



108240, 108241 

 Cassin Ls. Vermont 



