214 CATALOGUE OF THE CRETACEOUS AND [bull. 152. 
Sassafras parvifolium Font. Potomac Fl., p. 289, pi. cxxxix, f. 7, 
1889. 
Potomac formation : Baltimore, Maryland. 
Sassafras (Araliopis) platanoides Lx. Cret. and Tert. Fl., p. 58, pi. 
vii, f. 1, 1883. 
Dakota group: Kansas. 
Sassafras? primordiale Lx. Fl. Dak. Gr., p. 100, pi. xvi, f. 10, 1892. 
Dakota group : Kansas. 
Sassafras progenitor Newby. MSS. Hollick, Bull. Torr. Bot. Club, 
vol. xxi, p. 53, pi. clxxiv, f. 1, 1894 ; Newby., Fl. Amboy Clays, p. 88, 
pi. xxvii, f. 1-3, 1895 [1896]. 
Cretaceous: Oak Neck, Long Island; Marthas Vineyard. 
Amboy clay: Woodbridge, New Jersey. 
Sassafras (Araliopsis) recurvatum Lx. Cret. and Tert. Fl., p. 57, 
1883. 
Platanus recurvata Lx. Cret. Fl., p. 71, pi. x, f. 3-5, 1874. 
Sassafras recurvatus Lx. Ann. Rept., U. S. Geol. and Geogr. Surv. Terr., p. 
424, 1872 [1873]. 
Dakota group: Near Fort Harker, Kansas. 
Sassafras Selwynii Dn. Geol. Surv. Canada, Rept. Prog, for 1879-80, 
p. 53A, 1881; Trans. Roy. Soc. Canada, vol. iv, sec. iv, p. 28, pi. ii, f. 
13,1886 [1887]. 
Canadian upper Laramie: Souris River. 
Sassafras subintegrifolium Lx. Am. Journ. Sci.,vol. xlvi, p. 99, 1868 ; 
Fl. Dak. Gr., p. 99, pi. xiv, f. 2, 1892. 
Dakota group : Kansas. 
Sassafras sp., Lx. Ann. Rept. U. S. Geol. and Geogr. Surv. Terr., p. 
298, 1871 [1872]. [Not afterwards mentioned by Lesquereux.] 
Laramie group?: Six miles above Spring Canyon, Montana. 
Sassafras (Araliopsis) sp., Lx. Rept. on Clays in N. J., p. 29, 1878. 
Amboy clay: Burts Creek, New Jersey. 
Sassafras sp., Dn. Trans. Roy. Soc. Canada,vol. i, sec. iv, p. 27, pi. vii, 
f. 30, 30a, 1882 [1883]. 
Upper Cretaceous: Baynes Sound; Vancouver Island. 
Sassafras sp., Kn. in Hill. Am. Journ. Sci., vol. 1, p. 212, 1895. 
Cheyenne sandstone : Belvidere, Kansas. 
SCIRPUS (Tournefort) Linnaeus. Syst., ed. i, 1735. 
Scirpus sp., Dn. Rept. on Geol. and Res. near 49th Parallel, Appen. 
A, p. 329, 1875. 
Lignitic Tertiary: Porcupine Creek. 
Scirpus sp., Dn. Rept. on Geol. and Res. near 49th Parallel, Appen. 
A, p. 329, 1875. 
Lignitic Tertiary: Porcupine Creek. 
SCLEROPTERIS Saporta. Paleontol. Francaise : PI. Jurass., vol. i, 
p. 364, 1873. 
Scleropteris dentata Font. Potomac Fl., p. 153, pi. lxiii, f. 3, 4, 1889. 
Potomac formation: Fredericksburg, Virginia. 
