866 BULLETIN 02, UNITED STATES NATIONAL MUSEUM. 



Octonaria Inaequalis Ulrich and Bassler. 



Octonaria insequalis Ulrich and Bassler, Maryland Geol. Surv., Low. Dev., 1913, 



p. 538, pi. 98, figs. 12-18. 



Helderbergian (Keyser): Cumberland, Maryland. 

 Cotypes: Cat. No. 53284, U.S.N.M. 



Octonaria simplex (Krause). 



Thlipsura simplex Krause, Zeits. deutsch. geol. Gesell., 43, p. 508, 1891, pi. 32, 



fig. 16. 

 Octonaria simplex Ulrich and Bassler, Maryland Geol. Surv., Low. Dev., 1913, p. 



538, pi. 93, fig. 19. 



Helderbergian (Keyser): Cumberland, Maryland. 

 Plesiotype.Ca.t. No. 53285, U.S.N.M. 



ODONTOCAULIS Lapworth. Genotype: Odontocaulis keeping! Lap worth. 



Odontocaulis Lapworth, Quart. Jour. Geol. Soc. London, 37, 1881, p. 176, 

 pi. 7, figs. 7a, b. Pocta, Syst. Sil. Centre Boheme, 8, pt. 1, 1894, p. 171. 

 Ruedemann, Mem. New York State Mus., 11, pt. 2, 1908, p. 172. 



Odontocaulis grant! (Spencer). 



Callograptus granti Spencer, Canadian Nat., 10, 1882, p. 165 (norn. nud.); Trans. 



Acad. Sci. St. Louis, 4, 1884, pp. 564, 571, 572, pi. 1, fig. 10; Bull. Mus. Univ. 



State Missouri, 1, 1884, pp. 14, 21, 22, pi. 1, figs. 10, 10a. Gurley, Jour. Geol., 



4, 1896, pp. 93, 308. 



Odontocaulis granti Bassler, Bull. U. S. Nat. Mus. 65, 1909, p. 42, figs. 53, 54. 

 Niagaran dolomite: Hamilton, Ontario. 



Odontocaulis hepaticus Ruedemann. 



Odontocaulis hepaticus Ruedemann, Mem. New York State Mus., 11, pt. 2, 

 1908, pp. 174, 175, pi. 1, figs. 6, 7, text figs. 79-81. 



Chazyan: Glenmont, Albany County, New York (Normanskill); Arkansas (String- 

 town). 



Odontocaulis obpyrlformis Gurley. 



Odontocaulis obpyriformis (Gurley MS.) Bassler, Bull. U. S. Nit. Mus., 65, 1909, 



pp. 43, 44, fig. 55. 

 Niagaran dolomite: Hamilton, Ontario. 



Odontocaulis occidentalis Gurley. 



Odontocaulis occidentalis (Gurley MS.) Bassler, Bull. U. S. Nat. Mus., 65, 1909, 



p. 44, fig. 56. 

 Niagaran dolomite: Hamilton, Ontario. 



ODONTOPLEURA Emmrich. Genotype: 0. ovata Emmrich. 



Odontopleura Emmrich, De Tril. Dissertatio, etc., 1839, p. 53. Burmeister, Org. 

 der Tril., Berlin, 1843, p. 71. Goldfuss, Neues Jahrb. Min., etc., 1843, pp. 

 541, 556. Beyrich, Untersuchungen uber Tril., 1846, p. 16. Emmrich, 

 Neues Jahrb. f. Min., etc., 1846, p. 44. Hawle and Corda, Abh. d.k. bohmi- 

 echen Gesell. d. Wies., 5 (extract, 1847), p. 347, pi. 7, fig. 28. Clarke, 10th 

 Rep. State Geol. New York for 1890, 1891, pp. 64, 67; 44th Rep. New York 

 State Mus., 1892, pp. 94, 97. Etheridge and Mitchell, Proc. Linnean Soc. 

 New South Wales, 21, 1897, p. 695. Grabau and Shimer, N. A. Index Fossils, 

 2, 1910, p. 313. Raymond, Zittel-Eastman Textb. Pal., 1913, p. 722. 



Odontopleura arkansana Van Ingen. 



Odontopleura arkansana Van Ingen, School of Mines Quart., 23, 1901, p. 40, fig. 9, 



pl. fig. 2. 

 Niagaran (St. Clair): St. Clair Springs, Independence County, Arkansas. 



