TYPE SPECIMENS OF FOSSIL PLANTS. 333 



7350. Thyrsopteris pinnatifida ? Fontaine. Illustrated specimen. 

 Lakota (Low. Cret.). South Fork of Hay Creek near 

 Barrett, Crook County, Wyoming. 



Fontaine, Nineteenth Ann. Rept. U. S. Geol. Surv., Pt. II, 1899, 

 p. 658, pL 161, figs. I, 2. 



3186. Thyrsopteris rarinervis Fontaine. Types. 



3830 Potomac (Low. Cret.). Fredericksburg; 72d milepost, 



to near Brooke; White House Bluff; entrance to Trent's 



3832. Reach, Virginia. 



Fontaine, Mon. XV, U. S. Geol. Surv., 1889, pp. 123-124, pi. 26, 

 figs. 6, 7; pi. 43, figs. 4-6; pi. 44, figs. I, 2, 5; pi. 49, fig. 2; 

 pi. 169, figs. 6, 7. 



4003. Thyrsopteris rarinervis Fontaine. Illustrated specimen. 



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

 California. 



Fontaine in Ward, Mon. XLVIII, U. S. Geol. Surv., 1895, p. 225, 

 pi. 65, figs. 3, 4. 



3219. Thyrsopteris retusa Fontaine. Type. 



Potomac (Low. Cret.). Hillside near Potomac Run (Fred- 

 ericksburg area), Virginia. 



Fontaine, Mon. XV, U. S. Geol. Surv., 1889, p. 144, pi. 59, fig. 10. 



3401. Thyrsopteris rhombifolia Fontaine. Types. 



3785. Potomac (Low. Cret.). Fredericksburg; fishing hut above 



3787. Dutch Gap Canal, Virginia. 



3939- Fontaine, Mon. XV, U. S. Geol. Surv., 1889, p. 13S, pi. 52, fig. 5; 



pi. 54, fig. I. 



3445. Thyrsopteris rhombiloba Fontaine. Type. 



Potomac (Low. Cret.). Hillside near Potomac Run 

 (Fredericksburg area), Virginia. 



Fontaine, Mon. XV, U. S. Geol. Surv., 1889, p. 144, pi. 59, figs. 6, 7; 

 pi. 60, fig. 8. 



3223. Thyrsopteris sphenopteroides Fontaine. Types. 



3934. Potomac (Low. Cret.). Hillside near Potomac Run, Vir- 



3937. ginia. 



Fontaine, Mon. XV, U. S. Geol. Surv., 1889, p. 143, pi. 58, fig. 6. 



3443. Thyrsopteris squarrosa Fontaine. Type. 



Potomac (Low. Cret.). Hillside near Potomac Run; near 

 Telegraph Station (Fredericksburg area), Virginia. 



Fontaine, Mon. XV, U. S. Geol. Surv., 1889, p. 143, pi. 59, fig. 3. 



2651. Thyrsopteris trifoliata (Hall) Lesquereux. Type. 



Jurassic? or Lower Cretaceous. Uinta County, Wyoming. 

 Lesquereux, Proc. U. S. Nat. Mus., XI, 1888, p. 38. 

 See Sphenopteris trifoliata. 



2653. Thyrsopteris triloba (Hall) Lesquereux. Type. 



Jurassic? or Lower Cretaceous. Uinta County, Wyoming. 

 Lesquereux, Proc. U. S. Nat. Mus., XI, 1888, p. 38. 

 See Sphenopteris triloba. 



