128 U.S. NATIONAL MUSEUM BULLETIN 262 



Stemtonocevas 



elongatum Ulrich and Foerste 



Ulrich, E. O., and Foerste, A. F., 1936b: p. 289, pi. 38, fig. 3. 



Holotype 92695 



Upper Ozarkian Pennsylvania 



Ulrich, E. O., et al., 1944: p. 29. 



Hypotypes 109431 



Upper Ozarkian Pennsylvania 



Stenogomphoceras 

 chadwicki Foerste 



Foerste, A. F., 1930a: p. 368, 369, pi. 61, figs. 2a-d. 

 Holotype 81451 



Port Byron Dol. Illinois 



cf. S. chadwicki Foerste 



Foerste, A. F., 1930b: p. 122, pi. 23, figs, la, b. 

 Figured specimen 81455 



Port Byron Dol. Illinois 



contractum Foerste 



Foerste, A. F., 1930b: p. 120, 121, pi. 24, figs. 5a, b. 

 Holotype and paratypes 81453 



Port Byron Dol. Illinois 



gvacile Foerste 



Foerste, A. F., 1930b: p. 121, 122, pi. 24, figs. 8a, b. 

 Holotype 81454 



Port Byron Dol. Illinois 



inflatum Foerste 



Foerste, A. F., 1930b: p. 119, 120, pi. 24, figs. 4a-c. 

 Paratype 81452 



Port Byron Dol. Illinois 



cf. S. inflatum Foerste 



Foerste, A. F., 1930b: p. 119, 120, 122, pi. 24, figs. 7a-c. 

 Figured specmen 81452a 



Port Byron Dol. Illinois 



? sp. 



Foerste, A. F., 1934: p. 190, 191, pi. 32, figs. 3a, b. 

 Figured specimen 81926 



Cedarville Dol. Ohio 



