BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 1055 



Pseudohornera niagarensis — Continued. 



Drymotrypa niagarensis Ulrirh, Geol. Surv. Illinois, 8, 1890, p. 399. 

 Pseudohornera niagarensis Basslcr, Bull. U. S. Geol. Surv., 292, 1906, p. 49, pi. 



18, fig. 20; pi. 19, figs. 14-16. 



Clinton — Niagaran: Lockport and Niagara Falls, New York; Hamilton, Ontario 

 (Rochester); Waldron, Indiana; and Newsom, Tennessee (Waldron). 



PsEUDOtiNnuLA Mickwitz. See Lingula subgenus Pseudolingula. 



PSEUDONISCUS Nieszkowski. Genotype: P. aculeatus Nieszkowski. 



Pseudoniscus Nieszkowski, Archiv. f. Naturk-Liv-Ehst. u. Kurl., 1, 1859, p. 381. — 

 Schmidt, Mem. Acad. Imp. Sci. St. Petersburg, 7th ser., 31, No. 5, 1883, p. 

 34.— Zittel, Handb. Pal., 2, 1885, p. 642— Packard, Mem. Nat. Acad. Sci., 

 3, pt. 2, 1886, p. 151.— Vogdes, Ann. New York Acad. Sci., 5, 1S89, p. 2, 

 pi. I, fig. 5.— Clarke, 54th Rep. New York State Mm, 1901, pp. 84-88.— 

 Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 403.— Clarke, Zittel- 

 Eastman Textb. Pal., 1900, p. 673; 2d ed., 1913, p. 777. 



Pseudoniscus roosevelti Clarke. 



Pseudoniscus roosevelti Clarke, 54th Ann. Rep. New York State Mus.. 1st App., 

 1902, pp. 87, 89, pi. 1, fig. 1; pi. 2, figs. 1-3.— Grabau and Shimer, N. A. Index 

 Fossils, 2, 1910, p. 403, fig. 1703. 

 Cayugan: Near Pittsford, Monroe County (Pittsford), and Litchfield, New York 

 (Bertie). 



PSEUDOSPHAEREXOCHUS Schmidt. 



Genotype: Sphserexochus hemicranium Kutorga. 

 Pseudosphaerexochus Schmidt, Mem. Acad. Imp. Sci. St. Petersburg, 7th ser., 30, 

 1881, pp. 122, 124, 126, 130, 170.— Clarke, Geol. Minnesota, 3, pt. 2, 1894, pp. 

 737-8. — Reed, Geol. Mag., dec. 4, 3, 1896, p. 119. — Koken, Die Leitfossilien, 

 Leipzig, 1896, p. 35, fig. 23; fig. 2.— Reed, Geol. Mag., dec. 4, 5, 1898, p. 210 — 

 Raymond, Ann. Carnegie Mtis., 1905, p. 375. — Grabau and Shimer, N. A. 

 Index Fossils, 2, 1910, p. 320.— Raymond, Zittel-Eastman Textb. Pal., 1913, 

 p. 725. 



Pseudospilerexochus apollo Raymond. See Anacheirurus? apollo. 



Pseudosphaerexochus approximus Raymond. 



Pseudosphaerexochus approximus Raymond, Ann. Carnegie Mus., 3, 1905, p. 369, 



pi. 14, fig. 18; 7th Rep. Vermont State Geol., 1910, p. 242, pi. 36, fig. 18. 

 Chazyan (Crown Point): Sloop Bay, Valcour Island, New York. 



Pseudosphaerexochus canadensis (Billings). 



Sphaerexochus Canadensis Billings, Cat. Sil. Foss. Anticosti, Geol. Surv. Canada, 



1866, p. 64, fig. 21. 

 Anticostian (Chicotte): Southwest Point, Anticosti. 



Pseudosphaerexochus chazyensis Raymond. 



Pseudospharrexochus chazyensis Raymond, Ann. Carnegie Mus., 3, 1905, p. 370, 

 pi. 14, figs. 19, 20; 7th Rep. Vermont State Geol., 1910, p. 243, pi. 36, figs. 



19, 20. 



Chazyan (Crown Point): Valcour Island and Chazy, New York. 



Pseudosphaerexochus? clintonl (Foerste). 



Ceraurus Foerste, Bull. Sci. Lab. Denison Univ., 2, 1887, p. 98, pi. 8, fig. 17. 



Ceraurus (Pseudosphaprexochus) clintoni Foerste, Geol. Surv. Ohio, 7, 1895, 



p. 527, pi. 27, fig. 17. 

 Upper Medinan (Brass field): Brown's Quarry, near Dayton, Ohio. 



