BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 9 



Acrotreta Idahoensis alta — Continued. 



Canadian (Base of Pogonip): Adams Hill, Eureka County, Nevada. Also Middle 



and UpiJer Cambrian of Montana, Utah, and Nevada. 

 Eolotype and paratype.— Cat. Nos. 35273, 52099 U.S.N.M. 



Acrotreta minuta Walcott. See Linnarssonella minuta. 



Acrotreta ovalis Walcott. 



Acrotreta ovalis Walcott, Proc. U. S. Nat. Mus., 2o, 1902, p. 592; Mon. U. S. Geol. 



Siirv., 51, 1912, p. 699, pi. 66, figs. 2, 2a-b. 

 Ozarkian? (Levis-erratic): Point Levis, Quebec. 



Acrotreta sipo Matthew. See Acrotreta bisecta. 



ACTINOCERAS Bronn. Genotype: A. bigsbyi Bronn. 



Actinoceraa Bronn, Leth. geog., 1837, p. 97. — Stokes, Proc. Geol. Soc. London, 2, 

 1838, p. 689; Trans. Geol. Soc. London, 2d ser., 5, 1840, p. 707.— McCoy, 

 Syn. Char. Carb. Foss. Ireland, 1844, p. 11.— D'Orbigny, Prodr. de Pal., 

 1, 1849, p. 3.— Woodward, Man. Mollusca, pt. 1, 1851, p. 88, fig. 47.— Sae- 

 mann, Palaeontographica, 3, 1852, pp. 137, 145, 156. — Pictet, Traite de 

 Pal., 2d ed., 2, 1854, p. 638.— Emmons, Amer. Geology, 1, pt. 2, 1855, 

 p. 148.— Barrande, Bull. Soc. Geol. France, 2d ser., 12, pt. 1, 1855, 

 p. 458; Neues Jahrb. f. Min., etc., 1855, p. 395. — Woodward, Geol. Mag., 5, 

 1868, p. 133.— Barrande, Syst. Sil. du Centre Boheme, 2, pt. 3, 1879, p. 760.— 

 Hyatt, Proc. Boston Soc. Nat. Hist., 22, 1883, p. 272.— Zittel, Handb. Pal., 2, 

 1884, p. 368.— Foord, Geol. Mag., dec. 3, 5, 1888, p. 487; Cat. Foss. Ceph. 

 Brit. Mus., 1, 1888, p. 164.— Miller, N. A. Geol. Pal., 1889, p. 431.— Wliid- 

 bome, Mon. Dev. Fauna South England, 1, Pal. Soc, 1890, p. 119. — Bather, 

 Nat. Sci., 5, 1894, pp. 431, 434, fig. 0.— Clarke, Geol. Minnesota, 3, pt. 2, 1897, 

 p. 781.— Hyatt, Zittel-Eastman Textb. Pal., 1, 1900, p. 528.— Foord, Mon. 

 Carb. Ceph. Ireland, pt. 5, Pal., Soc, App., 1903, p. 211.— Grabau and 

 Shimer, N. A. Index Fossils, 2, 1910, p. 114.— Hyatt, Zittel-Eastman Textb. 

 Pal., 2d ed., 1913, p. 609. 



Ormoceras. Stokes, Proc Geol. Soc London, 2, 1838, p. 689; Trans. Geol. Soc 

 London, 2d ser., 5, 1840, p. 709.— Woodward, Man. Mollusca, pt. 1, 1851, p 

 88, fig. 48. — Saemann, Palaeontographica, 3, 1852, pp. 146, 156. — Billings 

 Geol. Surv. Canada, Rep. Progr. for 1853-56, 1857, pp. 326, 328.— Barrande 

 Neues Jahrb. f. Min., etc, 1855, p. 400. — Emmons, Amer. Geology, 1, pt. 2 

 1855, p. 150.— Barrande, Bull. Soc. Geol. France, 2d ser., 12, pt. 1, 1855, p 

 470.— Chapman, Canadian Jour., n. s., 8, 1863, p. 20; Expos. Min. Geol 

 Canada, 1864, p. 128.— Barrande, Syst. Sil. du Centre Boheme, 2, pt. 3, 1874 

 p. 765.— Hyatt, Proc Boston Soc Nat. Hist., 22, 1884, p. 271.— Zittel, Handb 

 Pal., 2, 1884, p. 368.— Miller, N. A. Geol. & Pal., 1889, p. 445.— (Genotype 

 O.bayfieldi Stokes). 



Paractinoceras (subgenus of Actinoceras) Hyatt, Zittel-Eastman Textb. Pal., 

 1900, p. 528 (Genotype: Sactoceras canadense AMiiteaves). 



Deiroceras (subgenus of Actinoceras) Hyatt, Proc. Boston Soc Nat. Hist., 22, 

 1884, p. 273 (Genotype: Orthoceras python Billings). 



Conotubularia Troost, Mem. Soc. Geol. France, 3, 1838, p. 87; 5th Geol. Rep. Ten- 

 nessee, 1840, p. 5. — Saemann, Palaeontographica, 3, 1852, p. 146. — Barrande, 

 Syst. Sil. Boheme, 2, pt. 3, 1874, p. 767. (Genotype: C. cuvierii Troost.) 



Actinoceras abnorme (Hall). 



Orthoceras abnorme Hall, 20th Rep. New York State Cab. Nat. Hist., 1868, p. 355, 

 pi. 18 (9), fig. 10; rev. ed. 1868 (1870), p. 415, pi. 18, fig. 10; pi. 25, fig. 18.— 

 Barrande, Syst. Sil. du Centre Boheme, 2, pt. 3, 1874, p. 756, pi. 456.— Day, 

 Trans. Wisconsin Acad. Sci., Arts Letters, 4, 1879, p. 120. 



