1048 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Protocycloceras lamarckl — Continued. 



Protocycloceras lamarcki Hyatt, Zittel-EastmanTextb. Pal., 1, 1900, p. 518 (gen. 



ref.).— Ruedemann, Bull. New York State Mus., 90, 1906, p. 441, pi. 15, 



figs. 1-6; pi. 16, figa. 1-2; figs. 15, 16. — Grabau and Shinier, N. A. Index 



Fossils, 2, 1910, p. 56, fig. 1255. 

 Canadian: Mingan Islands; Godmanchester, and Leeds and Grenville counties, 



Canada; Newfoundland; Beekmantown, etc., New York (Beekmantown). 



Protocycloceras whitfieldi Ruedemann. 



Orthoceras bilineatum Whitfield, Bull. Amer. Mus. Nat. Hist., 3, 1890, p. 35, 



pi. 2, fig. 5, fig. 17a-b. 

 Protocycloceras whitfieldi Ruedemann, Bull. New York State Mus. Nat. Hist., 



90, 1906, p. 443, fig. 17a, pi. 15, fig. 7. 

 Canadian (Beekmantown): Fort Cassin, Vermont. 



PROTOKIONOCERAS Grabau and Shimer. 



Genotype: Orthoceras medullare Hall. 

 Protokionoceras Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 58. 



Protokionoceras crebescens (Hall). 



Orthoceras crebescens Hall, 20th Rep. New York State Cab. Hist., 1868, p. 354, 



pi. 19 (10), figs. 1-3; rev. ed., 1870, p. 413, pi. 19, figs. 1-3— Chamberlin, 



Geol. Wisconsin, 1, 1883, p. 194, fig. — Whiteaves, Pal. Foss. Geol. Surv. 



Canada, 3, pt. 1, 1884, p. 37; ibid., pt. 2, 1895, p. 98.— Newell, Proc. Boston 



Soc. Nat. Hist., 23, 1888, p. 466.— Lesley, Geol. Surv. Pennsylvania, Rep. 



P 4, 1889, p. 545, fig. — Clarke and Ruedemann, Mem. New York State Mus., 



5, 1903, p. 80, pi. 10, figs. 24, 27, 28; p\ 11, figs. 2-5. 

 Protokionoceras crebescens Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 



58, fig. 1263. 

 Niagaran: Racine, etc., Wisconsin (Waukesha, Racine, and Guelph); Hespeler, 



Elora, etc., Ontario; Shelby, New York (Guelph). 



Protokionoceras medullare (Hall). 



Orthoceras medullare Hall, 20th Rep. New York State Cab. Hist., 1868, p. 353, 



pi. 20, figs. 1, 2; p. 381; rev. ed., 1870, p. 412, pi. 20, figs. 1, 2.— Meek and 



Worthen, Geol. Surv. Illinois, 6, 1875, p. 504, pi. 26, fig. 1.— Hall, 11th Ann. 



Rep. Indiana Dep. Geol. Nat. Hist., 1882, p. 323; Trans. Albany Inst., 10, 



1883, p. 74.— Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 1, 1884, p. 37.— 



Keyes, Missouri Geol. Surv., 5, 1894, p. 227. — Whiteaves, Pal. Foss., Geol. 



Surv. Canada, 3, pt. 2, 1895, p. 99 (loc. occ.).— Grabau, Bull. Buffalo Soc. 



Nat. Sci., 7, 1901, p. 216; Bull. New York State Mus., 45, 1901, p. 216.— 



Kindle and Breger, 28th Ann. Rep. Dep. Geol. Nat. Res. Indiana, 1904, p. 



469, pi. 19, figs. 1, 2. 

 Orthoceras (Kionoceras) medullare Clarke and Ruedemann, Bull. New York State 



Mus., 65, 1903, p. 811 (gen. ref.). 

 Kionoceras medullare Clarke and Ruedemann, Mem. New York State Mus., 65, 



1903, p. 86, pi. 10, fig. 23. 

 Protokionoceras medullare Grabau and Shimer, N. A. Index Fossils, 2, 1910, 



p. 58, fig. 1262. 

 Clinton-Niagaran: Waukesha, etc., Wisconsin (Racine); Elora, Ontario; New 



York; Delphi, Indiana; etc. 



Protokionoceras trusltum (Clarke and Ruedemann). 



Orthoceras trusitum Clarke and Ruedemann, Mem. New York State Mus., 5, 1903, 

 p. 77, pi. 10, figs. 25, 26; pi. 13, figs. 1-10. 



