222 CATALOGUE OF THE CRETACEOUS AND [BULL.R2. 
Sphenolepidium Sternbergianum (Dunk.) Heer. Fl. Foss. du Por- 
tugal, p. 19, pi. xiii, f. la, 2-8; xiv, 1881; Font., Potomac Fl., p. 261, 
pi. cxxi, f. 8, 10, 11; cxxx, f. 9, 1889. 
Muscites Sternbergianus Dunk. Monogr. Norddeutsch. Wealdenbildung., 
p. 20, pi. vii, f. 10, 1846. 
Potomac formation : Near Potomac Run and Fredericksburg, Vir- 
ginia. 
Sphenolepidium Sternbergianum densifolium Font. Potomac Fl., 
p. 261, pi. cxviii, f. 7; cxxi, f. 5, 7, 9; cxxv, f. 2; cxxix, f. 3; cxxx, 
f. 1; cxxxi, f. 1, 3; cxxxii, f. 4, 1889; Proc. U. S. Nat. Mus., vol. xvi, 
p. 268, pi. xxxvi, f. 10, 1893. 
Trinity division : Glenrose, Texas. 
Potomac formation : Near Telegraph Station, near Potomac Run, 
and Fredericksburg, Virginia. 
Sphenolepidium virginicum Font. Potomac Fl., p. 259, pi. cxxv, f. 
4; clxvi, f. 6, 1889. 
Potomac formation : Near Brooke, Virginia. 
Kootanie: Great Falls, Montana. 
Sphenolepidium sp., Dn. Trans. Roy. Soc. Canada, vol. x, sec. iv, p. 
90, f. (in text) 13, 1892. 
Kootanie: Anthracite?, British Columbia. 
SPHENOPTERIS Brongniart. Class, et Dist. V6g. Foss.: Mem. 
Mus. Hist. Nat., vol. viii, p. 233, 1822. 
Sphenopteris acrodentata Font. Potomac Fl., p. 90, pi. xxxiv, f. 4, 
1889. 
Potomac formation: Dutch Gap Canal, Virginia; Baltimore, Mary- 
land. 
Sphenopteris corrugata Newby. Later Extinct Floras, p. 10, 1868. 
Dakota group: Blackbird Hill, Nebraska. 
Sphenopteris elongata Newby. Bost. Journ. Nat. Hist., vol. vii, p. 
511, 1863. 
: Point Doughty, Orcas Island; Protection Island. 
Sphenopteris eocenica Ett.=Dryopteris arguta. 
Sphenopteris grevilicoides Heer. Fl. Foss. Arct., vol. iii, abt. ii, 
p. 34, pi. xi, f. 10, 11, 1874; Hollick, Bull. Geol. Soc. Am., vol. vii, p. 13, 
1895. 
Cretaceous : Marthas Vineyard. 
Sphenopteris Lakesii Lx.=Dryopteris arguta. 
Sphenopteris G-uyottii Lx. Cret. and Tert. Fl., p. 137, pi. xxi, f. 1-7, 
1883. 
Green River group: Florissant, Colorado. 
Sphenopteris latiloba Font. Potomac Fl., p. 90, pi. xxxv, f. 3-5; 
xxxvi, f. 4-9; xxxvii, f. 1, 1889. 
Kootanie: Anthracite, British Columbia. 
Potomac formation : Fredericksburg, near Dutch Gap Canal, Deep 
Bottom, and near Telegraph Station, Virginia. 
