1911] Teller, Fossils from the Palceozoic Formal ions. 235 



Platyceras primordiale Hall. Upper Cambrian. 



Sixteenth Ann. Bept. N. Y. State Cab. of Nat. Hist., Hall, 1863, 



p. 136, pi. 16, fig. 28. 

 Locality — Trempealeau, Wis. 

 Type — Am. Mus. of Nat. Hist. 



Platyceras wisconsinense Ulrich and Scofield. Trenton (Ord.) 



Geol. and Nat. Hist. Snrv., Minn., Ulrich and Scofield, 1897, 



Vol. 3, Pt. 2, p. 1068, pi. 61, figs. 49-54. 

 Locality — Beloit, Wis. 

 Types — Univ. of Wisconsin. 



Pleuronatus sp. Cleland. Hamilton (Dev.) 



Wis. Geol. and Nat, Hist, Surv., Cleland, 1911, Bull. 21, p. 126, 



pi. 27, fig. 11. 

 Locality — Lake Church, Wis. 

 Type — Williams College. 



Pleurotomaria depauperata Hall. Trenton (Ord.) 

 Geol. of Wis., Hall, 1862, Vol. 1, p. 55, fig. 5. 



Obs. Miller says this species is from the Hudson River 

 Group. 

 Locality — ? 

 Type—? 



Pleurotomaria halei Hall. Niagara (Sil.) 



GeoL Surv. Wis., Bept. of Prog.. Hall, 1861, p. 34. 



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



p. 364, pi. 15- (6.), figs. 13, 14. 

 Locality — Bacine, Wis. 

 Types — Am. Mus. of Nat, Hist. 



Pleurotomaria hoyi Hall. Niagara (Sil.) 



Pleurotomaria hoyi, Geol. Surv. Wis., Bept. of Prog., Hall, 1861, 



p. 35. 

 Pleurotomaria hoyi, Twentieth Ann. Bept, N. Y. State Cab. Nat. 



Hist., Hall, 1867, p. 364, pi/ 15 (6.), fig. 10. 

 Pleurotomaria (Troehonema) hoyi, Twentieth Ann. Bept. N. Y. 



State Cab. Nat. Hist., Revised Ed., Hall, 1868, p. 393 pi. £5. 



figs. 11, 12. 

 Locality — Bacine, Wis. 

 Types — Am. Mus. of Nat, Hist, 



