918 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Orthoceras transversum Miller. 



Orthoceras transversum Miller, Cincinnati Quart. Jour. Sci., 2, 1875, p. 129. — 



James, J. F., Jour. Cincinnati Soc. Nat. Hist., 8, 1886, p. 239. — Ulrich, Amer. 



Geol., 1, 1888, p. 325.— Foord, Cat. Foss. Ceph. British Mus., 1, 1888, p. 15.— 



Miller, N. A. Geol. Pal., 1889, p. 452, fig. 755. 

 Eden: Cincinnati, Ohio, and vicinity. 



Orthoceras trusitum Clarke and Ruedemann, See Protokionoceras trusitum. 



Orthoceras turbidum Hall and Whitfield. 



Orthoceras turbidum Hall and Whitfield, Geol. Surv. Ohio, Pal., 2, 1875, p. 100, 

 pi. 3, fig. 1.— James, J. F., Jour. Cincinnati Soc. Nat. Hist., 8, 1886, p. 240.— 

 Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 560, fig. 

 Maysville (Fairmount): Cincinnati, Ohio, and vicinity. 



Orthoceras (Actinoceras) turgido-nummulatum Foerste. See Actinoceras 

 turgid onummulatum . 



Orthoceras tyronense Foerste. 



Orthoceras tyronensis Foerste, Bull. Sci. Lab. Denison Univ., 17, 1912, p. 139, 



pi. 10, figs. 5a, b. 

 Black River (Lowville): High Bridge, Kentucky. 



Orthoceras undulatum Hall. See Dawoonoceras annulatum. 



Orthoceras undulostriatum Hall. 



Orthoceras undulostriatum Hall, Pal. New York, 1, 1847, p. 202, pi. 43, figs. 



7a-k. — Emmons, Amer. Geology, 1, pt. 2, 1855, p. 150. — Salter, Quart. Jour. 



Geol. Soc. London, 15, 1859, p. 375, pi. 13, figs. 25, 26. 

 Trenton: Middleville, New York. 



Orthoceras unlonense Worthen. 



Orthoceras Unionensis Worthen, Geol. Surv. Illinois, 6, 1875, p. 505, pi. 26, fig. 4. — 



Newell, Proc. Boston Soc. Nat. Hist., 23, 1888, p. 467. 

 Niagaran: Union County, Illinois; Wabash, Indiana. 



Orthoceras(?) vagum Ruedemann. 



Orthoceras(?) vagum Ruedemann, Bull. New York State Mus., 90, 1906, p. 435, 



pi. 13, figs. 1-3; pi. 9, fig. 9. 

 Chazyan (Valcour): Valcour Island, New York; Isle La Motte, Vermont. 



Orthoceras varro Billings. 



Orthoceras varro Billings, Cat. Sil. Foss. Anticosti, Geol. Surv. Canada, 1866, p. 84. 

 Niagaran (Lockport): Rockwood and Grimsby, Ontario. 



Orthoceras velox Billings. See Cameroceras velox. 



Orthoceras vertebrale Hall. See Cycloceras olorus. 



Orthoceras (Ormoceras) vertebratum Barrande. See Actinoceras vertebratum. 



Orthoceras veterator Billings. 



Orthoceras veterator Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 350. 

 Canadian (Beekmantown) : Township of Oxford, Ontario. 



Orthoceras virgatum? Hall. See Kionoceras cancellatum. 



Orthoceras virgulatuni Hall. 



Orthoceras virgulatum Hall, Pal. New York, 2, 1852, p. 96, pi. 29, fig. 2a, b, c. 

 Lower Clinton: Reynale's Basin and Lockport, New York. 





