Maeyland Geological Survey 435 



from Glen Eose, Texas, which Fontaine describes as Sequoia pagiopJiyl- 

 loides sp. nov. 



The species may be a composite one, its wide geographical and geo- 

 logical range offers some basis for such a suspicion, but the materials 

 available for study do not furnish reliable data for its segregation. 



Occurrence. — Patusent Formation. ISTew Eeservoir, Ivy City, Dis- 

 trict of Columbia; Fredericksburg, Potomac Eun, Trents Eeach, Dutch 

 Gap, Telegraph Station (Lorton), Cockpit Point, Kankeys, Virginia. 

 Arundel Formation. Bay View, Arlington, Maryland. Patapsco 

 Formation. Federal Hill (Baltimore), Vinegar Hill, Maryland; near 

 Brooke, 73-mile post, Mt. Vernon, Hell Hole, Virginia. 



Collections. — IT. S. National Museum, Johns Hopkins University. 



Sphenolepis Sternbergiana (Dunker) Schenk 

 Plate LXXV, Figs. 1, 2 



Muscites Sternhergianus Dunker, 1846, Mon. Norddeutsch. "Weald.-Bild., p. 



20, pi. vii, fig. 10. 

 Juniperites Sternhergianus Brongniart, 1849, Tableau, p. 108. 

 Muscites SternUergianus linger, 1850, Gen. et Sp., p. 42. 

 Araucarites Dunkeri Ettingshausen, 1851, Abh. k. k. geol. Reichs., Band i, 



Abth. iii, p. 27, pi. ii, figs. 2, 3, 7, 8 (pars). 

 Araucarites curvifolius Ettingshausen, 1851, IMd., p. 28, pi. ii, figs. 11, 



,13, 14, 17-21. 

 Araucarites Dunkeri Hildebrand, 1861, Verbreit. Conif., p. 276. 

 Widdringtonites Dunkeri Schimper, 1870, Pal. Veget., tome ii, p. 329. 

 Widdringtonites curvifolius Schimper, 1870, Ibid. 

 Sphenolepis Sternbergiana Schenk, 1871, Palseont., Band xix, p. 243, pi. 



xxxvii, figs. 3, 4; pi. xxxviii, figs. 3-13. 

 Sequoia gracilis Heer, 1873, Fl. Foss. Arct., Bd. iii, Ab. ii, p. 80, pi. xviii, 



fig. Ic; pi. xxii, figs. 1-10. 

 Sphenolepis Sternbergiana Schimper, 1874, Pal. Veget., tome iii, p. 575, 



Atlas, pi. ex, fig. 27. 

 Sphenolepidium Sternbergianum Heer, 1881, Contrib. Fl. Foss. Port., p. 19, 



pi. xiii, figs, la, 2-8; pi. xiv. 

 Sphenolepis Sternbergiana Hosius and v. d. Marck, 1885, Palseont., Band 



xxvi, p. 215, pi. xliv, figs. 206-208. 

 Sphenolepidium Sternbergianum Fontaine, 1890, Mon. U. S. Geol. Surv., 



vol. XV, 1889, p. 261, pi. cxxi, figs. 8, 10, 11; pi. cxxx, fig. 9. 

 Sphenolepidium Sternbergianum densifollum Fontaine, 1890, Mon. U. S. 



Geol. Surv., vol. xv, 1889, p. 261, pi. cxviii, fig. 7; pi. cxxi, figs. 5, 7, 9; 



pi. cxxv, fig. 2; pi. cxxix, fig. 3; pi. cxxx, fig. 1; pi. cxxxi, figs. 1, 3; pi. 



cxxxii, fig. 4. 



