60 U.S. NATIONAL MUSEUM BULLETIN 262 



Ectocyrtoceras 



? gibberosum Foerste 



Foerste, A. F., 1934: p. 148, 149, pi. 32, figs. 4a, b. 

 Holotype 89822 



Cedarville Dol. Ohio 



marginatum Foerste 



Foerste, A. F., 1930b: p. 79, pi. 9, figs. 2a-c. 

 Holotype 81437 



Port Byron Dol. Illinois 



? wilmingtonense Foerste 



Foerste, A. F., 1934: p. 147, 148, pi. 33, figs. la. b. 

 Holotype and paratypes 89821a, 89821b-d 



Cedarville Dol. Ohio 



Ellesmeroceras 



briagei Flower 



Flower, R. H., 1941b: p. 7-9, pi. 1, figs. 1-10; pi. 2. fig. 6; text- 

 figs, la, b. 

 Syntypes 108483 



Ozarkian ? Alaska 



expansum Flower 



Flower, R. H., 1941b: p. 9, 10, pi. 2, figs. 3-5. 

 Holotype 108484 



Ozarkian ? Alaska 



higdonense Ulrich, Foerste, Miller, and Unklesbay 



Ulrich, E. O., et al., 1944: p. 67, pi. 29, figs. 12-14. 

 Holotype and paratype 109496, 109497 



Gasconade Dol. Missouri 



hotchkissi Ulrich, Foerste, Miller, and Unklesbay 



Ulrich, E. O., et al., 1944: p. 67, 68, pi. 29, figs. 3-7. 

 Holotype and paratypes 109498-109500 



Oneota Dol. Wisconsin 



robsonensis Walcott 



Walcott, C. D., 1924: p. 527-529, pi. 126, figs. 5-9a. 



Syntypes 69803-69806, 19502, 



19503 

 Cushina Fm. British Columbia, 



Canada 



