1911] Tclhr. Fossils from the Palceosoic Formations. 241 



Cyrtoceras featherstonhaughi Clarke. Trenton (Ord.) 



Geol. and Nat. Hist. Surv., Minn., Clarke, 1897, Vol. 3, Pt. 2, 



p. 807, pL.58, figs. 12-15. 

 Locality — Madison, Wis. 

 Types — Collection of W. H. Scofield. Cannon Falls, Minn. 



Cyrtoceras infundibulum Whitfield. Niagara (Sil.) 

 Ann. Kept. Geol. Surv. Wis., Whitfield, 1879, p. G6. 

 Geol. of Wis., Whitfield. 1882, Vol. 4, p. 300. pi. 20, figs. 4, 5. 

 Locality — Racine, Wis. 

 Types — Univ. of Wisconsin. 



Cyrtoceras laterale Hall. Niagara (Sil.) 



Twentieth Ann. Kept. N. Y. State Cab. of Nat. Hist.. Hall, 1867, 



p. 357, pi. 18 (9.), figs. 4-6. 

 Locality — Racine, Wis. 

 Types — Am. Mus. of Nat. Hist. 



Cyrtoceras loculosum Hall. Trenton (Ord.) 



Geol. Surv. Wis., Rept. of Prog., Hall, 1861, p. 42. 



Mem. Am. Mus. of Nat. Hist., Whitfield, 1895, Vol. 1. Pt. 2, p. 67, 



pi. 9, figs. 6-9. 

 Locality — Madison, Wis. 

 Types — Am. Mus. of Nat. Hist. 



Cyrtoceras lucillus Hall. Niagara (Sil.) 



Eighteenth Ann. Rept. N. Y. State Cab. of Nat. Hist.. Hall, 1864, 



p. 349, pi. 18, figs. 7. 

 Locality — Wauwatosa, Wis. 

 Type — Am. Mus. of Nat. Hist. 



Cyrtoceras macrostomum (Conrad.) Trenton (Ord.) 



Cyrtoceras maryinale, Proc. Acad, of Nat. Sci.. Phila.. Conrad, 



1843, p. 334. 

 Cyrtoceras macrostomum, Pal. of N. Y.. Hall. 1847, Vol. 1, p. 194, 



pi. 42, figs. 1 b. c. 

 Locality — Mineral Point. Wis. 

 Types — Am. Mus. of Nat. Hist. 



Cyrtoceras marginale Conrad = Cyrtoceras macrostomum. 



