

BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 1055 



Pseudohornera niagarensis Continued. 



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

 Pseudohornera niagarensis Bassler, 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 Newsoin, Tennessee (Waldron). 



PSEUDOLINOULA Mickwitz. See Lingula subgenus Pseudolingula. 



PSEUDONISCUS Nieszkowski. Genotype: P. aculeatus Nieszkowski. 



PseudoniscusNieszkowski, Archiv. f. Naturk-Liv-Ehst. u. Kurl., 1, 1859, p. 381. 

 Schmidt, Mem. Acad. Imp. Sci. St. Petsrsburg, 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, 1889, p. 2, 

 pi. 1, fig. 5. Clarke, 54th Rep. New York State Mus., 1901, pp. 84-88. 

 Grabau and Shimer, N. A. Index Fossils, 2, 3910, p. 403. Clarke, Zittel- 

 Eabtman 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). 



PSEUDOSPH^REXOCHUS Schmidt. 



Genotype: Sphaerexochus hemicramum 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 Mus., 1905, p. 375. Grabau and Shimer, N. A. 

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

 p. 725. 



PSEUDOSPH^REXOCHUS APOLLO Raymond . See Anacheirurus? apollo. 



Pseudosphserexochus approxlmus Raymond. 



Peeudosphaerexochus 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. 



Pseudosphserexochus canadensis (Billings). 



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



1866, p. 64, fig. 21. 

 Anticostian (Chicotte) : Southwest Point, Anticosti. 



Pseudosphaerexochus chazyensls Raymond. 



Pseud osphaerexochus 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? cllntoni (Foerste). 



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



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



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

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



