BIBLIOGKAPHIC LIST OF GENERA AND SPECIES. 905 



Orthoceras duseri Continued. 



Foord, Cat. Foss. Ceph. British Mus., 1, 1888, p. 14. Lesley, Geol. Surv. 



Pennsylvania, Rep. P 4, 1889, p. 548, figs. Cumirigs,. 32d Ann. Rep. Dep. 



Geol. Nat. Res., Indiana, 1908, p. 1036, pi. 52, fig. 2-2b. 

 Orthoceras Fosteri Miller, Cincinnati Quart. Jour. Sci., 2, 1875, p. 127; Jour. 



Cincinnati Soc. Nat. Hist., 4, 1881, p. 319, pi. 8, figs. 7, 7a. 

 Richmond (Waynesville) : Waynesville, etc., Ohio; Indiana. 



Orthoceras dyeri Miller. 



Orthoceras Dyeri Miller, Cincinnati Quart. Jour. Sci., 2, 1875, p. 125, text fig. 11; 

 Jour. Cincinnati Soc. Nat. Hist., 3, 1880, p. 236, pi. 7, fig. 7. James, J. F., 

 ibid., 8, 1886, p. 238. Foord, Cat. Foss. Ceph. British Mus. 1 ,1888, p. 

 15. Miller, N. A. Geol. Pal., 1889, p. 447, fig. 751. 



Maysville (Corryville) : Cincinnati, Ohio. 



Orthoceras edax Billings. 



Orthoceras edax Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 349. 

 Canadian (Beekmantown): Township of Oxford, Ontario. 



Orthoceras ekwanense Whiteaves. 



P Orthoceras Ekwanense Whiteaves, Geol. Surv. Canada, Ann. Rep., n. s., 14, 

 App. F., 1904, p. 56; Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 1906, p. 265, 

 pl. 33, figs. 1, la. 

 Niagaran: Ekwan River, Canada. 



Orthoceras elegantulum Dawson. 



Orthoceras elegantulum Dawson, Canadian Nat. Geol., 5, 1860, p. 155, footnote; 

 Acadian Geol., Suppl. Chap., 1860, p. 68, fig. 62; ibid., 2d ed., 1868, p. 606, 

 fig.213. Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 548, figs. 



Silurian: Arisaig, Nova Scotia. 



Orthoceras erraticum Foerste. 



Orthoceras erraticum Foerste, Amer. Geol., 12, 1893, p. 235, fig. 1-3. 



Orthoceras (Eu-Orthoceras) erraticum Foerste, Geol. Surv. Ohio, Pal., 7, 1893, 



p. 541, figs. 1-3, on p. 540. 

 Upper Medinan (Brassfield): Huffman's Quarry, near Dayton, Ohio. 



Orthoceras exornatum Dawson. 



Orthoceras exornatum Dawson, Canadian Nat. Geol., 5, 1860, p. 298. 

 Silurian: Pictou, Nova Scotia. 



Orthoceras explorator Billings. 



Orthoceras explorator Billings, Pal. Foss. 1, Geol. Surv. Canada, 1865, p. 253, 



text. fig. 238a, b. 

 Canadian (Quebec): Pistolet Bay, Schooner Island, Newfoundland. 







ORTHOCERAS EXPLORATOR Whitfield. See Cameroceras (Proterocameroceras) brain- 

 erdi. 



ORTHOCERAS FERUM Billings. See Spyroceras ferum. 



Orthoceras filiforme Castelnau. 



Orthoceras filiforme Castelnau, Essai Syst. 1'Amerique Septent., 1843, p. 30, 



pl. 10, fig. 2. 

 Niagaran: Drummond Island, Lake Huron. 



Orthoceras flavius Billings. 



Orthoceras Flavius Billings, Pal. Foss., 1, Geol., Surv. Canada, 1865, p. 255. 

 Chazyan (Quebec I) Point Rich, Newfoundland. 



