BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 369 



Cyrtorizoceras dardanum (Hall). 



Cyrtoceras dardanum Hall, Rep. Sup. Geol. Surv. Wisconsin, 1861, p. 43; 20th 



Rep. New York State Cab. Nat. Hist., 1868 (extras Jan., 1865), p. 349, pi. 



17(8), figs. 3-5; rev. ed., 1870, p. 406, pi. 17, figs. 3-5. Meek and Worthen, 



Geol. Surv. Illinois, 6, 1875, p. 506, pi. 25, figs. 6a, b. 



Cyrtoceras Fultonensis Meek and Worthen, Geol. Surv. Illinois, 6, 1875, p. 506. 

 Cyrtorhizoceras dardanus Clarke and Ruedemann, Mem. New York State Mus., 



5, 1903, p. 91 (gen. ref.). 

 Niagaran: Waukesha, Wisconsin (Racine); Fulton City, Illinois. 



Cyrtorizoceras fosteri (Hall). 



Cyrtoceras fosteri Hall, Rep. Sup. Geol. Surv. Wisconsin, 1861, p. 41. Winchell 



and Marcy, Mem. Boston Soc. Nat. Hist., 1, 1865, p. 102. Hall, 20th Rep. 



New York State Cab. Nat. Hist., 1868 (extras Jan., 1865), p. 349, pi. 16(7), 



* figs. 11-13; rev. ed., 1870, p. 406, pi. 16, figs. 11-13. 



Cyrtorhizoceras fosteri Clarke and Ruedemann, New York State Mus., 5, 1903, 



p. 91 (gen. ref.). 

 Niagaran (Racine): Chicago, Illinois; Wisconsin. 



Cyrtorizoceras Isodorus (Billings). 



Cyrtoceras Isodorus Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 175, fig. 



157a, b. 

 Black River: St. Joseph Island, Lake Huron. 



Cyrtorizoceras mlnneapolls (Clarke). 



Cyrtoceras minneapolis, Clarke, Geol. Minnesota, 3, pt. 2, 1897, p. 808, pi. 59, 



figs. 1-8. 

 Cyrtorizoceras minneapolis Hyatt, Zittel-Eastman Textb. Pal., 1900, p. 529 



(gen. ref.). 



Black River (Platteville) : Minneapolis, Minnesota. 

 Cotype. Cat. No. 46525, U.S.N.M. 



CTRTOSPIRA Ulrich. 



Genotypes: C. tortilis Ulrich and Subulites ventricosus Hall. 

 Cyrtospira Ulrich, Geol. 'Minnesota, 3, pt. 2, 1897, p. 1073. 



Cyrtosplra abbreviata (Hall). 



Subulites abbreviata Hall, 3d Rep. New York State Cab. Nat. Hist., rev. ed., 1850, 



p. 180, pi. 3, fig. 2a-c; doc. ed., p. 172. 

 Cyrtospira abbreviata Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, p. 1070 



(gen. ref.). 

 Trenton: Near Watertown, New York. 



Cyrtospira attenuata Ruedemann. 



Cyrtospira attenuata Ruedemann, Bull. New York State Mus., 49, 1901, p. 35, 



pi. 2, fig. 8. 

 Mohawkian (Rysedorph): Ryeedorph Hill, Rensselaer County, New York. 



Cyrtospira bicurvata Ulrich. 



Cyrtospira bicurvata Ulrich, Geol. Minnesota, 3, pt. 2, 1897, p. 1074, pi. 81, 



figs. 21, 22. 



Black River (Lowville) : High Bridge, Kentucky. 

 Holotype. Cat. No. 45794, U.S.N.M. 



84243 Bull. 9215- 24 



