228 CATALOGUE OF THE CRETACEOUS AND [bull. 152. 
Tbinnfeklia polyinorpha (Lx.) Kn.= Thinnfeldia montana. 
Thinnfeldia rotundiloba Font. Potomac Fl., p. Ill, pi. xxvii, f. 6, 7, 
1889. 
Potomac formation: Fredericksburg and near Potomac Run, 
Virginia. 
Thinnfeldia subintegrifolia (Lx.). n. comb. 
Phyllocladus subintegrifolius Lx. Am. Journ. Sci., vol. xlvi, p. 92, 1868; 
Cret. FL, p. 54, pi. i, f. 12, 1874; Fl. Dak. Gi\, p. 34, pi. ii, f. 1-3, 1892. 
Thinnfeldia Lesqnereuxiana Heer. Fl. Foss. Arct., vol. vi, abt. ii, p. 37, pi. 
xliv, f. 9, 10; xlvi, f. 11, 12a, b ; Hollick, Trans. N. Y. Acad. Sci., vol. xi, p. 99, 
pi. iii, f. 6, 1892 ; Newby, Fl. Amboy Clays, p. 59, pi. xi, f. 1-17, 1895 [1896]. 
Dakota group : Kansas ; Decatur, Nebraska. 
Amboy clay: Cretaceous; Atane, Greenland. 
Thinnfeldia variabilis Font. Potomac FL, p. 110, pi. xvii, f. 3-7; 
xviii, f. 1-6, 1889. 
Potomac formation : Near Brooke and near Potomac Eun, Virginia. 
Knoxville beds: Tehama County, California. 
THUITES Sternberg. Vers., vol. i, Fasc. iii, p. 39, 1823. 
Thuites crassus Lx.=Brachyphyllum macrospermum. 
Thuites (Chanicecyparis) alaskensis Lx. Proc. U. 8. Nat. Mus., 
vol. v, p. 415, pi. vi, f. 7-9, 1882 [1883]. 
Eocene!: Unga Island, Alaska. 
Thuites callitrina Ung. Chlor. Prot., p. 22, pi. vi, f. 2, 18 ; Lx., Ann. 
Eept. U. S. Geol. and Geogr. Surv. Terr., p. 371, 1872 [1873 j. [Not 
afterwards mentioned by Lesquereux.] 
Green Eiver group: Castello's Ranch, Colorado. 
Thuites kurrianus Dunk. = Sphenolepidium kurrianum. 
Thuites Meriani Heer. Fl. Foss. Arct., vol. iii, abt. ii, p. 73, pi. xvi, 
f. 17, 18, 1873; Newby., Fl. Amboy Clays, p. 54, pi. x, f. 5, 1896. 
Amboy clay : No location. 
THUJA Linnaeus. Hort. Cliff., p. 449, 1737. 
Thuja G-armani Lx. Ann. Eept. U. S. Geol. and Geogr. Surv. Terr., 
p. 372, 1872 [1873]; Cret. and Tert. FL, p. 139, 1883 [1884]. 
Green Eiver group : Elko Station, Nevada. 
Thuja cretacea (Heer.) Newby. Fl. Amboy Clays, p. 53, pi. x, f. 1, la, 
1895 [1896]. 
Libocedrus cretacea Heer. Fl. Foss. Arct., vol. vi, abt. ii, p. 49, pi. xxix, f. 1, 2; 
xliii, f. U, 1882. 
Amboy clay : South Amboy, New Jersey. 
Thuja interrupta Newby. Later Extinct Floras, p. 42, 1868; Dm, 
Trans. Eoy. Soc. Canada, vol. iv, sec. iv, p. 22, pi. i, f. 3, 4, 1886 [1887]. 
Fort Union group : Porcupine Creek ; Fort Union, North Dakota. 
Thuja occidentalis L. Spec. PI., p. 1002, 1753; Dm, Can. Nat., vol. ii, 
p. 422, 1857; Geol. Hist. PI., p. 229, 1888; Britton, Trans. N. Y. Acad. 
Sci., vol. v, p. 218, 1886. 
Post-Pliocene: Montreal, Canada. 
Pleistocene: Cedar Creek and Natural Bridge, Virginia ; Marietta, 
Ohio. 
