1142 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Scenidium anthonense Sardeson. 



Skenidium lialli Safford, Geol. Tennessee, 1869, p. 287 (undefined). 



Scenidium halli Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 242, pi. 7A, 



figs. 33-39. 

 Skenidium anthonensis Sardeson, Bull. Minnesota Acad. Nat. Sci., 3, 1892, p. 333, 



pi. 4, fig. 7. 

 Scenidium anthonensis Winchell and Schuchert, Geol. Minnesota, 3, 1893, p. 



381, pi. 30, figs. 20-23. Weller, Geol. Surv. New Jersey Pal., 3, 1903, p. 



157, pi. 10, figs. 5-7. Grabau and Shimer, N. A. Index Fossils, 1, 1907, p. 



270, figs. 324h-k. 

 Black River: Minneapolis, Cannon Falls, etc., Minnesota; Dixon, Illinois; Jack- 



sonburg, New Jersey. 



Scenidium bassleri Foerste. 



Scenidium bassleri Foerste, Bull. Sci. Lab. Denison Univ., 14, 1909, p. 72, pi. 4, 



figs. 68 A, B. 

 Niagaran (Waldron) : Newsom, Tennessee. 



SCENIDIUM HALLI Hall and Clarke. See Scenidium anthonense. 



Scenidium(?) merope (Billings). 



Orthis Merope Billings, Geol. Surv. Canada Pal. Foss., 1, 1865, p. 139, fig. 116 



(adv. sheets, 1862). 

 Scenidium? merope Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 242, pi. 7A, 



figs. 31, 32. 

 Trenton: Ottawa, Ontario; Burgin, Kentucky. 



Scenidium? nodocostatum Rowley. 



Skenidium ?nodocostatum Rowley, Amer. Geol., 34, 1904, p. 280, pi. 16, figs. 60-63. 

 Niagaran (Bainbridge) : Six miles west of St. Marys, Ste. Genevieve County, 

 Missouri. 



Scenidium pyramidale Hall. 



Orthis pyramidalis Hall, Pal. New York, 2, 1852, p. 251, pi. 52, fig. 2. 

 Skenidium pyramidalis Hall, 13th Rep., New York State Cab. Nat. Hist., 1860, 



p. 70. 

 Scenidium pyramidale Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 242, 



pi. 7, figs. 29, 30; pi. 7A, figs. 40-42. Grabau, Bull. New York State Mus., 



45, 1901, p. 189, fig. 100; Bull. Buffalo Soc. Nat. Sci., 7, 1901, p. 189, fig. 100. 

 Skenidium pyramidata Hall, 2d Ann. Rep. New York State Geol., 1883, pi. 37, 



figs. 29, 30. 

 Clinton (Rochester): Lockport, New York. 



SCEPTROPORA Ulrich. Genotype: S. facula Ulrich. 



Sceptropora Ulrich, Amer. Geol., 1, 1888, p. 228; Contr. Micro-Pal. Cambro-SiL, 

 pt. 2, 1889, p. 46. Miller, N. A. Geol. Pal., 1889, p. 322. Ulrich, Geol. Sur. 

 Illinois, 8, 1890, p. 400; Zittel's Textb. Pal. (Eng. ed.), 1896, p. 281. Simp- 

 son, 14th Ann. Rep. State Geol. New York for 1894, 1897, p. 548. Nickles 

 and Bassler, Bull. U. S. Geol. Surv., 173, 1900, p. 143. Bassler, Bull. U. S. 

 Nat. Mus., 77, 1911, p. 152; Zittel-Eastman Textb. Pal., 1913, p. 343. 



Sceptropora facula Ulrich. 



Sceptropora facula Ulrich, Amer. Geol., 1, 1888, p. 229, fig. 1; Contr. Micro-Pal. 

 Cambro-Sil., pt. 2, 1889, p. 46, fig. 2; Geol. Sur. Illinois, 8, 1890, p. 401, fig. 

 15. Whiteaves, Pal. FOBS., 3, pt. 2, 1895, p. 117. Simpson, 14th Ann. Rep. 

 State Geol. New York for 1894, 1897, fig. 116 (p. 549). Bassler, Bull. U. S. 

 Nat. Mus., 77, 1911, p. 153, fig. 74. 



