BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 573 



Gypldula (Sioberella) uniplicata (Nettclroth). 



Peutamerus uniplicatus Nettelroth, Kentucky Fossil Shells, Mem. Kentucky 



Geol. Surv., 1889, p. 63, pi. 33, figs. 25, 26. 



Sieberella uniplicata Hall and Clarke, Pal. New York, 8, pt. 2, 1893, p. 247. 

 Gypidula uniplicata Schuchert, Bull. U. S. Geol. Surv., 87, 1897, p. 226. 

 Niagaran (Louisville): Louisville, Kentucky. 

 Holotype.C*t. No. 51337, U.S.N.M. 



GTROCERAS Dekoninck. Genotype: G. paradoxicum Dekoninck. 



Gyroceras Dekoninck, Desc. Animaux Fossiles, Liege, 1842, p. 530. D'Orbigny, 

 Prodr. de Pal., 1, 1849, p. 27. Woodward, Man. Mollusca, pt. 1, 1851, p. 91, 

 fig. 52. Saemann, Palaeontographica, 3, 1852, pp. 139, 159. Barrande, 

 Neues Jahrb. f. Min., 1854, etc., p. 7, pi. 1, figs. 4a, b. Pictet, Traite de Pal., 

 2d ed., 2, 1854, p. 651. Barrande, Neues Jahrb. f. Min., etc., 1855, p. 259; 

 Bull. Soc. Geol. France, 2d ser., 12, 1855, p. 159, pi. 5, fig. 7. Billings, Cana- 

 dian Nat. Geol., 2, 1857, p. 136, pi. 2, fig. 5. Chapman, Canadian Jour., n. s., 

 2, 1857, p. 266. Salter, Geol. Surv. Canada, dec. 1, 1859, pp. 31, 32. Bar- 

 rande, Syst. Sil. du Centre Boheme, 2, pt. 1, 1867, p. 156. Waagen, Mem. 

 Geol. Surv. India, Pal. Indica, 13th Ser., T, 1879, p. 64. Hall, >al. New 

 York, 5, pt. 2, 1879, pp. 358, 368, 389. Koninck, Ann. d. Mus. Royal d'Hist. 

 Nat. de Belgique, 5, 1880, p. 1. Blake, Mon. British Foss. Ceph., 1882, p. 

 65. Zittel, Handb. Pal., 2, 1884, p. 376. Miller, N. A. Geol. Pal., 1889, 

 p. 441. Whidborne, Mon. Dev. Fauna South England, 1, Pal. Soc., 1890, 

 p. 90. Foord, Cat. Foss. Ceph. British Mus., 2, 1891, p. 53. Koken, Die 

 Leitfossilien, Leipzig, 1896, p. 50, fig. 34. Cumings, 32d Ann. Rep. Dep. 

 Geol. Nat. Res., Indiana, 1908, p. 1027. 



Gyroceras abruptum Hall. 



Gyroceras abruptum Hall, llth Ann. Rep. Indiana Dep. Geol. Nat. Hist., 1882, 



p. 325; Trans. Albany Inst., 10, 1883, p. 75 

 Niagaran (Waldron): Waldron, Indiana. 



Gyroceras americanum Billings. 



Gyroceras (Lituites) americanum Billings, Geol. Surv. Canada, Rep. Progr. for 



1853-1856, 1857, p. 309. 



Trochoceras americanum? Foord, Cat. Foss. Ceph. British Mus., 2, 1891, p. 40. 

 Silurian: Port Daniel, Gaspe, Canada. 



Gyroceras baeri (Meek and Worthen). 



Trochoceras? Baeri Meek and Worthen, Proc. Acad. Nat. Sci. Philadelphia, 1865, 



p. 263. Meek, Geol. Surv. Ohio, Pal., 1, 1873, p. 157, pi. 13, fig. 9. Miller, 



Cincinnati Quart. Jour. Sci., 2, 1875, p. 133. 

 Lituites baeri James, J. F., Jour. Cincinnati Soc. Nat. Hist., 8, 1886, p. 248.- 



Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1890, p. 1228, figs. 

 Gyroceras baeri Miller, N. A. Geol. Pal., 1889, p. 441 (gen. ref.). Cumings, 32d 



Ann. Rep. Dep. Geol. and Nat. Res. Indiana, 1908, p. 1032, pi. 51, fig. 1. 

 Richmond (Liberty) : Richmond, etc., Indiana; Warren and Clinton Counties, 



Ohio. 



Gyroceras bannister! Winchell and Marcy. 



Gyroceras bannisteri Winchell and Marcy, Mem. Boston Soc. Nat. Hist., 1, 



1865, p. 102. 

 Trochoceras (Gyroceras) bannisteri Hall, 20th Rep. New York State Cab. Nat. 



Hist., 1868, pp. 261, 393; rev. ed., 1870, p. 403, pi. 25, fig. 17. 

 Niagaran (Racine): Chicago, Illinois; Wisconsin. 



