TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 639 



1 232 1. Tancredia bulbosa Whitfield. Cotypes. 



12328. Jurassic. East of Belle Fourche River, near Bear Lodge 



Butte, Black Hills, South. Dakota. 



Whitfield, Rept. Geol. and Resources Black Hills Dakota, 1880, 

 p. 370, pi. 6, figs. 1-3. 



8072. Tancredia ? ccelionotus White. Cotypes. 



Fox Hills (Cret.). Ten miles west of Greeley, Colorado. 



White, Eleventh Ann. Rept. U. S. Geol. Surv. Terr., 1879, p. 288, 

 pi. 5, figs. 2a-d. 



12282. Tancredia corbuliformis Whitfield. Cotypes. 



12328. Jurassic. East of Belle Fourche River, near Bear Dodge 



Butte, Black Hills, South Dakota. 



Whitfield, Rept. Geol. and Resources Black Hills Dakota, 1880, 

 p. 370, pi. 6, figs. 5-8. 



8176. Tancredia extensa White. Cotypes. 



Jurassic. North side of Bull Dake Fork, Southeastern 

 Idaho. 



White, Twelfth Ann. Rept. U. S. Geol. Surv. Terr., Pt. I, 1883, 

 p. 150, pi. 38, fig. 4a. 



12338. Tancredia ? inornata (Meek and Hayden). Plesiotypes. 



1 2341. Jurassic. East of Belle Fourche River, near Bear Dodge 



Butte, Black Hills, South Dakota. 



Whitfield, Rept. Geol. and Resources Black Hills Dakota, 1880, 

 p. 368, pi. 6, figs. 9-13. 



28938. Tancredia ? knowltoni Stanton. Holotype. 



Jurassic. Sentinel Butte, Yellowstone National Park. 



Stanton, Mon. XXXII, Pt. II, U. S. Geol. Surv., 1899, p. 621, 

 pi. 73, fig. 6. 



1 232 1. Tancredia postica Whitfield. Holotype. 



Jurassic. East of Belle Fourche River, Black Hills, South 

 Dakota. 



Whitfield, Rept. Geol. and Resources Black Hills Dakota, 1880, 

 p. 371, pi. 6, fig. 14. 



204. Tancredia warrenana Meek and Hayden. Cotypes. 



Jurassic. Southwest base of Black Hills, South Dakota. 



Meek and Hayden, Proc. Acad. Nat. Sci. Phila., i860, p. 183; 

 Pal. Upper Mo., Smithsonian Cont. to Knowl., No. 172, XIV, 

 1864, p. 96, pi. 3, fig. 7. 



12326. Tancredia warrenana Meek and Hayden. Plesiotypes. 



Jurassic. Redwater Valley, Black Hills, South Dakota. 



Whitfield, Rept. Geol. and Resources Black Hills Dakota, 1880, 

 p. 372, pi. 6, fig. 4. 



22890. Tapes cyrimeriformis Stanton. Cotypes. 



Colorado (Cret.). Huerfano Park, Colorado. 



Stanton, Bull. No. 106, U. S. Geol. Surv., 1893, p. 106, pi. 24, 

 figs. 1-6. 



