72 U.S. NATIONAL MUSEUM BULLETIN 262 



Gonioc eras- -Continued 



chaziense Ruedemann 



Bassler, R. S., 1919: p. 328, pi. 41, fig. 19. 



Hypotype 

 Chambersburg Ls. 



occidentale Hall 



66161 

 Pennsylvania 



Clarke, J. M., 1892-1896: p. 795, pi. 57, fig. 6. 



Hypotype 

 Trenton Ls. 



sp. 



Endo, Riuji, 1932: p. 109, pi. 22, fig. 4. 

 Figured specimen 

 Ssuyen Fm. 



46527 

 Illinois 



83760 

 Manchuria, China 



Grimsbyoceras 

 hills boroense 



Foerste 



Foerste, A. F., 1934: p. 

 figs. 4a, b. 

 Holotype and paratype 

 Peebles Dol. 



135. 136, pi. 31, figs. 2a, b, 3; pi. 36, 



81931a,b 

 Ohio 



Gyroceras 



duplicostatum 



Whitfield 



Whitfield, R. P., 1878: p. 78, pi. 7, fig. 1. 



Syntype 



Trenton Ls. 



Whitfield, R. P., 1882: p. 235, pi. 7, fig. 1. 

 Plastosyntype (illustrated) and 



syntype (mold) 

 Trenton Ls. 



136997 

 Wisconsin 



136997 

 Wisconsin 



logani Meek 



Meek, F. B., 1868: 



Holotype 



Chautauquan 



p. 110, pi. 15, figs. 2a- c. 



p. 141, pi. 32. 



sp. 



Cleland, H. F., 1911: 

 Figured specimen 

 Hamilton 



Haydenoceras 



acutum Flower 



Flower, R. H., 1949: p. 76, 77, pi. 18, figs. 1-3. 



5896 



British Columbia, 

 Canada 



78335 

 Wisconsin 



Holotype 

 Nevada Ls. 



13986 (reassigned 



114353) 

 Nevada 



