BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 361 



CYRTODONTA EMMA Billings. See Rhytimya emma. 



Cyrtodonta? ferruginea (Hall and Whitfield). 



Cypricardites ferrugineum Hall and Whitfield, Geol. Surv. Ohio, Pal., 2, 1875, 

 p. H6, pi. 5, fig. 11. Foerste, Bull. Sci. Lab. Denison Univ., 1, 1885, p. 93. 

 Avicula whitfieldi, Foerste, Geol. Surv. Ohio, Pal., 7, 1893, p. 558, pi. 37, fig. 5. 

 Upper Medinan (Brassfield): Near Wilmington, Ohio. 

 Plastotype.Cat. No. 46544, U.S.N.M. 



Cyrtodonta flnitima (Sardeson). 



Cypricardites finitimus Sardeson, Bull. Minnesota Acad. Nat. Sci., 4, 1896, p. 70, 



pi. 2, fig. 6. 

 St. Peter: Highland Park, Minnesota. 



CYRTODONTA GANTII Safford. See Modiolodon ganti. 



Cyrtodonta gibbera Ulrich. 



Cyrtodonta. gibbera Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 542, pi. 39, figs. 



13-15. Schuchert, Proc. U. S. Nat. Mus., 22, 1900, p. 162, pi. 13, figs. 34, 36. 



Trenton: Thirteen miles south of Cannon Falls, Minnesota (Prosser); Baffin 



Land. 

 Holotype. Cat. No. 46177, U.S.N.M. 



Cyrtodouta glabella (Ulrich). 



Cypricardites glabella Ulrich, 19th Ann. Rep. Geol. and Nat. Hist. Surv. Minne- 

 sota (March), 1892, p. 234, fig. 20. 



Cyrtodonta glabella Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 543, pi. 39, figs. 

 37, 40. 



Cypricardites minnesotensis Sardeson, Bull. Minnesota Acad. Nat. Sci., 3 (April), 

 1892, p. 338, pi. 6, fig. 21. 



Black River: Minneapolis, Minnesota (Platteville and Decorah); Beloit, Wis- 

 consin, and Dunleith, Illinois (Platteville). 



Holotype and plesiotype Cat. Nos. 46178-46180, U.S.N.M. 



Cyrtodonta grandis (Ulrich). 



Cypricardites grandis Ulrich, Amer. Geol., 6, 1890, p. 387, figs. 19a-c. 

 Cyrtodonta grandis Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 547, pi. 40, fig. 11, 

 fig. 43a-i. Grabau and Shimer, N. A. Index Fossils, 1, 1909, p. 409, fig. 529. 

 Trenton: Between Burgin and Danville, Kentucky; Cannon Falls, Kenyon, etc., 



Minnesota; Decorah, Iowa; Oshkosh, Wisconsin. 

 Cotypes and plesiotypes.Czt. Nos. 46182, 46859, U.S.N.M. 



Cyrtodonta grandis germana (Ulrich). 



Cypricardites germanus Ulrich, 19th Ann. Rep. Geol. and Nat. Hist. Surv. 

 Minnesota, 1892, p. 236, fig. 22. 



Cyrtodonta grandis var. germana Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 549, 

 pi. 40, figs. 9, 10, 12, fig. 43j. 



Trenton: Between Burgin and Danville, Kentucky; Cannon Falls, etc., Minne- 

 sota; Iowa; Wisconsin. 



Holotype and plesiotype. Cat. Nos. 46181, 46862, U.S.N.M. 



Cyrtodonta grandis intermedia Ulrich. 



Cyrtodonta grandis var. intermedia Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 549, 



fig. 43k. 



Trenton (Catheys): Haynie's Mill, central Tennessee. 

 Cotype. Cat. No. 46183, U.S.N.M. 



