KxowLTON.] TERTIARY PLANTS OP NORTH AMERICA. 185 
ProtophyUum Haydenii Lx. Cret. FL, p. 106, pi. xvii, f. 3, 1874; 
FL Dak. Gr., p. 192, pi. xliii, f. 1; pi. xliv, f. 1, 2, 1892. 
Pterospermites Haydenii Lx. Ann. Rept. U. S. Geol. and Geogr. Surv. Terr., 
p. 302, 1871 [1872]. 
Dakota group : Kansas. 
ProtophyUum intergerrimum Lx. FL Dak. Gr., p. 192, pi. xliii, f. 3, 
1892; Geo!, and Nat. Hist. Surv. Minn., p. 21, pi. B, f. 10, 11, 1893. 
Dakota group: Mankato, Minnesota. 
ProtophyUum Leconteanum Lx. Cret. FL, p. 103, pi. xvii, f. 4; pi. 
xxvi, f. 1, 1874; Fl. Dak. Gr., p. 187, pi. xl, f. 1, 1892. 
Credneria Leconteana Lx. Am. Journ. Sci., vol. xlvi, p. 98, 1868. 
Dakota group: Brookville, Kansas; Peace River, Xorthwest Ter- 
ritory. 
ProtophyUum minus Lx. Cret. FL, p. 104, pi. xix, f. 2; pi. xxvii, 
f. 1, 1874. 
Dakota group: Kansas. 
ProtophyUum? Mudgii (Lx.). 
Quercns Mudgii Lx. Ann. Kept. U. S. Geol. and Geogr. Surv. Terr.,p.302, 
1871 [1872]. 
Protophylluin Mngdii Lx. Civr. Fl., p. 106, pi. xviii, f. 3, 1871. 
Dakota group: Kansas. 
ProtophyUum multinerve Lx. Cret. FL, p. 105, pi. xviii, f. 1, 1874; 
Fl. Dak. Gr., p. 191, pi. xliii, f. 2; lxv, f. 1, 1892. 
Pterospermites multlnervis Lx. Ann. Rept. U. S. Geol. and Geogr. Surv. 
Terr., p. 302, 1871 [1872]. 
Dakota group: Southern Kansas. 
ProtophyUum nanaimo Dn. Trans. Roy. Soc. Canada, vol. i, sec. 
iv, p. 28, pi. viii, f. 35, 1882 [1883]. 
Upper Cretaceous: ^sanaimo; Baynes Sound. 
ProtophyUum nebrascense Lx. Cret. FL, p. 103, pi. xxvii, f. 3, 1874. 
Dakota group: Decatur, Nebraska. 
ProtophyUum obovatum Xewby. Fl. Amboy Clays, p. 128, pi. xxxviii, 
f. 4, 1895 [189(3.] 
Amboy clay: Woodbridge, Xew Jersey. 
ProtophyUum prasstans Lx. 11. Dak. Gr., p. 188, pi. xli, f. 2, 3; pi. 
xlii, f. 3, 4, 1S92. 
Dakota group : Kansas. 
ProtophyUum pseudospsrmoides Lx. Fl. Dak. Gr., p. 194, pi. lix, 
f. 2, 1892. 
Dakota group: Kansas. 
ProtophyUum pterospermifolium Lx. FL Dak. Gr., p. 195, pi. lix, f. 
1, 1892. 
Dakota group: Kansas. 
ProtophyUum quadratum Lx. Cret. FL, p. 104, pi. xix, f. 1, 1S74. 
Pterospermites quadratus Lx. Ann. Rept. V. S. Geol. and Geogr. Surv. Ten., 
p. 301, 1871 [1872]. 
Dakota group: South of Fort Darker, Kansas. 
