TYPE SPECIMENS OF FOSSIL PLANTS. 235 



6971. Onoclea sensibilis fossilis Newberry. Types. 



6976. Fort Union (Tert.). Fort Union, Buford County, North 



6977. Dakota. 



Newberry, Mon. XXXV, U. S. Geol. Surv., 1898, p. 8, pi. 23, fig. 3; 

 pi. 24, figs. 1, 3. 



See Onoclea sensibilis. 



8368. Onychiopsis psilotoides (Stokes and Webb) Ward. 



8369. Illustrated specimens. 

 2434. ) Jurassic? Corwin Coal Mine, east of Cape Lisburne, Alaska. 



Ward, Mon. XLVIII, U. S. Geol. Surv., 1905, p. 155, pi. 39, figs. 3-6. 



See Aspidium oerstedi. 



128. Opegrapha antiqua Lesquereux. Type. 



Laramie (Cret.). Black Buttes, Wyoming. 



Lesquereux, Sixth Ann. Rept. U. S. Geol. Surv. Terr., 1872 [1873], 

 p. 36, pi. 1, figs. 1, ia. 



161 7. Ophioglossum alleni Lesquereux. Type. 



Green River (Tert.). South Park, Florissant, Colorado. 

 Lesquereux, Sixth Ann. Rept. U. S. Geol. Surv. Terr., 1872 [1873], 



P- 37i- 

 = Tmesipteris alleni. 

 See Salvinia alleni. 



641. Oreodaphne cretacea Lesquereux. Type. 



Dakota (Cret.). Western Kansas. 



Lesquereux, Rept. U. S. Geol. Surv. Terr., VI, Pt. I, 1874, p. 84, 

 pi. 30, fig. 5. 



2525. Oreodaphne lithaeformis Lesquereux. Type. 



Eocene (Tert.). Lassen County, California. 



Lesquereux, Proc. U. S. Nat. Mus., XI, 1888, p. 30, pi. 14, fig. 4. 



16. Osmunda affinis Lesquereux. Illustrated specimen. 



Denver (Cret.). Golden, Colorado. 



Lesquereux, Rept. U. S. Geol. Surv. Terr., VII, Pt. II, 1878, p. 60, 

 pi. 4, fig. 1. 



4288. Osmunda affinis Lesquereux. Illustrated specimen. 



5235. Miocene (Tert.). Hill north of Lost Creek, Yellowstone 



National Park. 



Knowlton, Mon. XXXII, Pt. II, U. S. Geol. Surv., 1899, p. 673, 

 pi. 8o, figs. 4, 5. 



3260. Osmunda dicksonioides Fontaine. Type. 



3779 Potomac (Low. Cret.). Hillside near Potomac Run, Vir- 



to ginia. 



3781. Fontaine, Mon. XV, U. S. Geol. Surv., 1889, pp. 146, 147, pi. 41, 



fig- 5; pl- 58, fig. 9; P 1 - 59. figs- L 4, 8, 9. 11; pl- 60, figs. 2, 4, 

 5, 9; pl. 61, figs. 1, 2. 



4004. Osmunda dicksonioides Fontaine. Supplemental types. 



Shasta (Low. Cret.). Near Lowrey, Tehama County, Cali- 

 fornia. 



Fontaine in Diller and Stanton, Bull. Geol. Soc. Amer., V, 1894, 

 p. 450; in Stanton, Bull. No. 133, U. S. Geol. Surv., 1895, p. 15. 



= Matonidium althausii (part). 

 = Gleichenia nordenskioldi (part). 



