36 U.S. NATIONAL MUSEUM BULLETIN 262 



Clarkoceras --Continued 



newton-winchelli (Clarke) 



Unklesbay, A. G., 1954: p. 642, pi. 69, fig. 7. 

 Hypotype 123409 



Tanyard Fm., Staendebach Mdr. ? Texas 



newton-winchelli ? (Clarke) 



Ulrich, E. O., et al., 1943: p. 80, 81, pi. 42, fig. 10. 

 Figured and mentioned specimens 108307, 108310 



Chepultepec Dol. Alabama 



Mentioned specimen 108309 



Gasconade Dol. Missouri 



parvisiphonatum Ulrich, Foerste, and Miller 



Ulrich, E. O., et al., 1943: p. 97, pi. 44, fig. 5. 

 Holotype 108342 



Chepultepec Dol. Tennessee 



rectum Ulrich, Foerste, and Miller 



Ulrich, E. O., et al., 1943: p. 97, pi. 21, fig. 4. 

 Holotype 108343 



Gasconade Dol. Missouri 



ruguliferum Ulrich, Foerste, and Miller 



Ulrich, E. O., et al., 1943: p. 97, 98, pi. 46, fig. 3. 

 Holotype 108344 



Ellenburger Ls., Gasconade Horiz. Texas 



subarcuatum Ulrich, Foerste, and Miller 



Ulrich, E. O., et al., 1943: p. 98, pi. 48, figs. 5-8. 

 Holotype and paratype 108345, 108346 



Gasconade Fm. Missouri 



subcrassum Ulrich, Foerste, and Miller 



Ulrich, E. O., et al., 1943: p. 98, 99, pi. 51, figs. 1-4. 

 Holotype and paratype 108347a, b 



Gasconade Fm. Missouri 



subcrassum ? Ulrich, Foerste, and Miller 



Ulrich, E. O., et al., 1943: p. 98, 99. 



Described specimens 108348 



Gasconade Fm. Missouri 



subrectum Ulrich, Foerste, and Miller 



Ulrich, E. O., et al., 1943: p. 99, 100, pi. 49, figs. 1, 2. 

 Holotype 108349 



Gasconade Fm. Missouri 



