TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 609 



29386. Sphenodiscus beecheri Hyatt. Paratype. 



Ripley (Upper Cret. ). Three miles northeast of Ripley, 

 Mississippi. 



Hyatt, Mon. XLIV, U. S. Geol. Surv., 1903, p. 81. 



7754. Sphenodiscus lenticularis (Owen). Plesiotype. 



Fox Hills (Upper Cret.). Moreau River, South Dakota. 



Hyatt, Mon. XLIV, U. S. Geol. Surv., 1903, p. 71, pi. 8, figs. 1, 2. 



20863c. Sphenodiscus lenticularis mississippiensis Hyatt. 



Cotypes. 

 Ripley (Upper Cret.). Three miles northeast of Ripley, 

 Mississippi. 



Hyatt, Mon. XLIV, U. S. Geol. Surv., 1903, p. 77, pi. 9, figs. 7-9. 



2403. Sphenodiscus lobatus (Tuomey). Plesiotypes. 



20577. Ripley (Upper Cret.). Landers Mill, Tippah County, and 



Pontotoc County, Mississippi. 



Hyatt, Mon. XLIV, U. S. Geol. Surv., 1903, p. 66, pi. 6, figs. 1, 2; 

 pi. 7, figs. 1, 2; pi. 9, fig. 13." 



19145a. Sphenodiscus pleurisepta (Conrad). Plesiotypes. 



19145b. Eagle Pass (Upper Cret.). Near Eagle Pass, Texas. 



2 93 8 4- • Hyatt, Mon. XLIV, U. S. Geol. Surv., 1903, pp. 59-65, pi. 3, figs. 



29385. 13, 14; pi. 4, figs. 1, 2; pi. 5, figs. 1, 2. 



See Ammonites pleurisepta. 



29386. Sphenodiscus stantoni Hyatt. Cotypes. 



Eagle Pass (Upper Cret.). Near Eagle Pass, Texas. 



Hyatt, Mon. XLIV, U. S. Geol. Surv., 1903, p. 70, pi. 5, fig. 4; pi. 6, 

 fig- 5- 



4631 1. Sphenolium striatum Ulrich. Holotype. 



Trenton (Ord.). Thirteen miles south of Cannon Falls, 

 Minnesota. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., Final Rept, III, Pt. II, 

 1894, p. 624, pi. 36, figs. 44, 45. 



158089. Sphenotrochus claibornensis Vaughan. Cotypes. 



Claibornian (Eocene). Claiborne, Alabama. 



Vaughan, Mon. XXXIX, U. S. Geol. Surv., 1900, p. 85, pi. 6, 

 figs. i-3a (?pl. 5, fig. 22). 



158083. Sphenotrochus nanus (L,ea). Plesiotypes. 



158084. Claibornian (Eocene). Claiborne, Alabama. 



Vaughan, Mon. XXXIX, U. S. Geol. Surv., 1900, p. 80, pi. 5, 

 figs. 21-24 (?fig- 22). 



24336. Sphenotus gorceixi Clarke. Cotypes. 



Middle Devonian. Erere, Brazil. 



Clarke, Archivos do Mus. Rio de Janeiro, X, 1899, p. 59, pi. 5, 

 fig- 15- 

 23232—05 39 



