50 U.S. NATIONAL MUSEUM BULLETIN 262 



Cyrtogomphoceras - - Continued 



sp. 



Miller, A. K., et al., 1954: p. 108, pi. 43, figs. 4, 5. 

 Figured specimen 125230 



Upper Ordovician Sh. Baffin Island, Canada 



Cyrtorizoceras 



auctidomum Foerste 



Foerste, A. F., 1930b: p. 36, pi. 2, figs, a, b.; 4. 

 Holotype and paratype 81425, 81425a 



Port Byron Dol. Illinois 



barbense Foerste 



Foerste, A. F., 1936a: p. 54. 



Paratype 92810 



Gascons Fm. Quebec, Canada 



byronense Foerste 



Foerste, A. F., 1930b: p. 35, pi. 2, figs. 2a-c. 

 Holotype 81424 



Port Byron Dol. Illinois 



byronense ? Foerste 



Foerste, A. F., 1930b: p. 35 



Described specimen 81424a 



Port Byron Dol. Illinois 



cedarvillense Foerste 



Foerste, A. F., 1934: p. 119, 120, pi. 29, fig. 5. 

 Holotype 81924 



Cedarville Dol. Ohio 



diagonale Foerste 



Foerste, A. F., 1936a: p. 52, 53, pi. 25, figs. 5, 6. 



Holotype and paratypes 92796, 92796a, 92809 



Gascons Fm. Quebec, Canada 



falciforme Foerste 



Foerste, A. F., 1934: p. 120, 121, pi. 29, fig. lc. 

 Syntypes 82172a 



Cedarville Dol. Ohio 



fosteri (Hall) 



Foerste, A. F., 1930b: p. 28-31, pi. 3, figs, la, b; pi. 4, figs. 3, 4. 

 Hypotype 81423 



Port Byron Dol. Illinois 



Hypotype s 82171 



Cedarville Dol. Ohio 



