BIBLIOGRAPHIC INDEX OF AMERICAN ORDO- 

 VICIAN AND SILURIAN FOSSILS. . 



By Ray S. Bassler 



Curator of Paleontology, United States National Museum. 



BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 



ACACOCRINUS Wachsmuth and Springer. 



Genotype: A. elrodi Wachsmuth and Springer. 

 Acacocrinus (subgenus of Habrocrinus) Wachsmuth and Springer, Mem. Mus. 

 Comp. Zool., Harvard, 21, 1897, p. 515.— Miller, N. A. Geol. Pal., 2d App., 

 1897, p. 730.— Springer, Zittel-Eastman Textb. Pal., 2d ed., 1913, p. 194. 



Acacocrinus americanus Wachsmuth and Springer. 



Acacocrinus americanus Wachsmuth and Springer, Mem. Mus. Comp. Zool., Har- 

 vard, 21, 1897, p. 516, pi. 34, fig. 15a, b. 

 Xiagaran (Laurel): St. Paul, Indiana. 



Acacocrinus elrodi Wachsmuth and Springer. 



Acacocrinus elrodi Wachsmuth and Springer, Mem. Mus. Comp. Zool., Harvard, 



21, 1897, p. 515, pi. 34, fig. 16. 

 Niagaran (Waldron): Hartsville, Indiana. 



AcANTHALOMA Conrad. See Ceratocephala Warder. 



ACANTHOCLEMA Hall. Genotype: Trematopora altemata Hall. 



Acanthoclema Hall, 5th Ann. Rep. State Geol. New York for 1885, 1886, expl. 

 pi. 25.— Hall and Simpson, Pal. New York, 6, 1887, p. 15.— Miller, N. A. 

 Geol. Pal., 1889, p. 291.— UMch, Geol. Surv. Illinois, 8, 1890, pp. 402, 661.— 

 Simpson, 14th Ann. Rep. State Geol. New York for 1894, 1897, p. 552.— 

 Nickles and Bassler, Bull. U. S. Geol. Surv., 173. 1900, p. 44.— Bassler, Bull. 

 U. S. Geol. Surv., 292, 1906, p. 58; Zittel-Eastman Textb. Pal., 1913, p. 344. 



Acanthoclema asperum (Hall). 



Trematopora aspera Hall, Pal. New York, 2, 1852, p. 154, pi. 40 A, figs. lOa-c. 



Batostomella? aspera Nickles and Bassler, Bull. U. S. Geol. Surv., 173, 1900, p. 189. 



Acanthoclema asperum Bassler, Bull. U. S. Geol. Surv., 292, 1906, p. 58, pi. 21, 

 figs. 3-5; pi. 24, figs. 7-9; pi. 25, figs. 17-20. 



Clinton: Lockport, Rochester, etc.. New York; Grimsby, Hamilton, etc., On- 

 tario (Rochester); Osgood, Indiana (Osgood). 



Plesiotypes.—C&t. No. 35756, U.S.N.M. 



84243°— Bull. 92—15 1 1 



