BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 1017 



Pliomerops? saltcri (Billings). 



Amphion Salteri Billings, Canadian Nat. Geol., 1861, p. 322, fig. 6; Geol. Canada, 



Geol. Surv. Canada, 1863, p. 278, fig. 284a, b; Pal. Foss., 1, Geol. Surv, 



Canada, 1865, p. 352, fig. 339. 

 Canadian (Beekmantown): Phillipsburg, Quebec. 



Pliomerops? westoni (Billings). 



Amphion Westoni Billings, Pal. Foss., 1, Geol. Surv., Canada, 1865, p. 321, fig. 



307, a, b. 

 Canadian (Beekmantown): Stanb ridge, Quebec. 



Plumulites gracillimus Lesley. See Turrilepas gracillimua. 



Plumulites Jamesi Hall and Whitfield. See Lepidocoleus jamesi 



PODOLITHUS Sardeson. Genotype: P. strophocrinus Sardeson. 



Podolithus Sardeson, Jour. Geol., 16, 1908, p. 242. 



Observation. — Founded upon crinoid bases or roots. The necessity of giving 

 separate names to such objects and the value of such work is not apparent. The 

 author creates the genus and species knowing that these organisms are only 

 bases of associated crinoids. 



Podolithus anomalocrlnus Sardeson. 



Podolithus anomalocrinus Sardeson, Jour. Geol., 16, 1908, p. 246. 

 Trenton: Dodge County, Minnesota. 



Podolithus dendrocrinus Sardeson. 



Podolithus dendrocrinus Sardeson. Jour. Geol., 16, 1908, p. 248. 

 Black River and Trenton: St. Paul, Minnesota. 



Podolithus eucheirocrinus Sardeson. 



Podolithus eucheirocrinus Sardeson, Jour. Geol., 16, 1908, p. 247. 

 Black River and Trenton: St. Paul, Minnesota. 



Podolithus schizocrinus Sardeson. 



Podolithus schizocrinus Sardeson, Jour. Geol., 16, 1908, p. 244. 

 Black River: Minnesota. 



Podolithus strophocrinus Sardeson. See Carabocrinus dicyclicus. 



POLEUMITA Clarke and Ruedemann. 



Genotype: P. ecamnata Clarke and Ruedemann. 

 Euomphalus (part) Sowerby, Min. Conch., 1, 1814, p. 97. 

 Orisotoma (part) Lindstrom (not Munier Chalmas, 187G), Silur. Gastrop. and 



Pterop. Gotland, 1884, p. 156. 

 Horiostoma Fischer, Manuel Conch., etc., 1885, p. 813. 

 Omphalotrochus Lindstrom (not Meek), Sil. Gast. and Pter. Gotland, 1884, p. 



156.— Eastman, Textb. Pal., 1, 1900, p. 447. 

 Polytropis Dekoninck (not Sandberger, 1874), Fauna Carbon., 2, pt. 3, 1881, p. 



107.— Koken, Neues Jahrb. Min., Geol. Pal., 6, Beilage-Band, 1889, p. 425.— 



Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 2, 1895, p. 89. — Koken. 



Die Leitfossilien, Leipzig, 1896, pp. 126, 459, fig. 244; Neues Jahrb. Min., 



Geol. Pal., 1, 1898, p. 24. 

 Poleumita Clarke and Ruedemann, Mem. New York State Mus., 5, 1903, p. 59. — 



Whiteaves, Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 1906, p. 337. — Grabau and 



Shimer, N. A. Index Fossils, 1, 1909, p. 667. 

 Polytropina Donald, Quart. Jour. Geol. Soc. London, 61, 1905, p. 575. 



