906 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Orthoceras formosum Billings. 



Orthoceras formosum Billings, Geol. Surv. Canada, Rep. Progr. for 1853-56, 1857, 



p. 317; Cat. Sil. Foss. Anticosti, Geol. Surv. Canada, 1866, pp. 22, 58 (loc. 



ref.). 

 Richmond (English Head) : English Head, Anticosti. 



Orthoceras fosteri Miller. See Orthoceras duseri. 



Orthoceras foxense Safford. 



Orthoceras Foxense Safford, Geol. Tennessee, 1869, p. 290 (nom. nud.). 

 Stones River: Tennessee. 



Orthoceras franklinense Miller. 



Orthoceras franklinensis Miller, 18th Rep. Dep. Geol. Nat. Res., Indiana, 1894, 



p. 322, pi. 10, fig. 3 (adv. sheets, 1892). 

 Niagarar): Franklin County, Indiana. 



Orthoceras fulgur Billings. See Actinoceras fulgur. 



Orthoceras furtivum Billings. See Protocycloceras(?) furtivum. 



Orthoceras fusiforme Hall. 



Orthoceras fusiforme Hall (not Sowerby, 1828), Pal. New York, 1, 1847, p. 60, 



pi. 20, fig. 1.— Hyatt, Mem. Mus. Comp. Zool., 16, 1889, p. 35, footnote. 

 Gomphoceras hallii D'Orbigny, Prod. Pal., 1, 1850, p. 3. — Emmons, Amer. 



Geology, 1, pt. 2, 1855, p. 151. 

 Black River: Watertown, New York. 



Orthoceras glaucus Billings. 



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

 Canadian (Beekmantown): Township of Oxford, Ontario. 



Orthoceras goldfussi (Troost). 



Conotubularia Goldfussi Troost, Mem. Soc. Geol. France, 3, 1838, p. 90, pi. 9, fig. 

 3; 5th Geol. Rep. Tennessee, 1840, p. 49; 6th Rep., 1841, p. 176 (nom. nud.). 

 Ordovician: Vicinity of Nashville, Tennessee. 



Orthoceras gorbyl Miller. 



Orthoceras gorbyi Miller, 18th Ann. Rep. Dep. Geol. Nat. Res. Indiana, 1894, p. 



322, pi. 10, fig. 2 (Adv. sheets, 1892).— Cumings, 32d Ann. Rep. Dep. Geol. 



Nat. Res. Indiana, 1908, p. 1037, pi. 52, fig. 3. 

 Richmond(?): Franklin County, Indiana. 



Orthoceras gregarium Hall. See Orthoceras sociale. 



Orthoceras grifflthi Haughton. 



Orthoceras Grifflthi Haughton, Jour. Geol. Soc. Dublin, 1, 1859, p. 239, pi. 5, fig. 



1.— Foord, Cat. Foss. Ceph. British Mus., 1, 1888, p. 41. 

 Niagaran: Griffiths Island, Barrow Strait, Arctic America. 



Orthoceras hoesitans Billings. 



Orthoceras hsesitans Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 254. ' 

 Chazyan (Quebec-I): Point Rich and Table Head, Newfoundland. 



Orthoceras hageri Hall. 



Orthoceras hageri Hall, Geol. Vermont, 1861, p. 718. 



Canadian (Beekmantown): West Haven, near Whitehall, Vermont. 



