140 U.S. NATIONAL MUSEUM BULLETIN 262 



Wichitoceras — Continued 



compressum Ulrich, Foerste, Miller, and Unklesbay 



Ulrich, E. O., et al., 1942: p. 84, pi. 57, figs. 10, 12-18; text-fig. 17f. 

 Syntypes 101416a-c 



Smithville Fm. Arkansas 



Syntype 101417 



Cotter Fm. Missouri 



compressum ? Ulrich, Foerste, Miller, and Furnish 



Ulrich, E. O., et al., 1942: p. 84, pi. 57, fig. 11. 

 Figured specimen 101481 



Cotter Fm. Missouri 



crassum Ulrich, Foerste, Miller, and Furnish 



Ulrich, E. O., et al., 1942: p. 84, 85, pi. 57, figs. 2, 3. 

 Holotype 101419 



Jefferson City Horiz. Oklahoma 



crassum ? 



Ulrich, E. O., et al., 1942: p. 84, 85, pi. 57, fig. 4. 

 Figured specimen 101421 



Cotter Fm. Oklahoma 



decipiens Ulrich, Foerste, Miller, and Furnish 



Ulrich, E. O., et al., 1942: p. 85, 86, pi. 25, fig. 4; pi. 57, fig. 1; 



text-fig. 23. 

 Holotype and paratypes 101422 



Jefferson City Horiz. Oklahoma 



naylorense Ulrich, Foerste, Miller, and Furnish 



Ulrich, E. O., et al., 1942: p. 86, pi. 57, figs. 6-9. 



Syntypes 101423 



Naylor Ledge Fm. Quebec, Canada 



Wilsonoceras 



bighornense Miller 



Foerste, A. F., 1935: p. 79-81, pi. 16, fig. 1. 

 Hypotype 90947 



Big Horn Fm., Lander Ss. Mbr. Wyoming 



cf. W. bighornense Miller 



Foerste, A. F., 1935: p. 81, 82, pi. 17, figs. 1-4. 

 Figured specimen 90948 



Big Horn Fm. Idaho 



