168 CATALOGUE OF THE CRETACEOUS AND [bull. 152. 
Planera longifolia Lx. Ann. Rept. IT. S. Geol. and Geogr. Surv. Terr, 
p. 371, 1872 [1873]; Tert. FL, p. 189, pi. xxvii, f. 4-6, 1878. 
Quercus semi-elliptica Gopp. Lx., Ann. Rept., p. 286, 1871 [1872]. 
Green River group: Elko Station, Nevada- Florissant, Colorado. 
Eocene?: North Fork Siinilkameen River, British Columbia. 
Planera longifolia myricaefolia Lx. Cret. and Tert. Fl., p. 1G1, pi. 
xxix, f. 15-27, 1883. 
Green River group : Florissant, Colorado. 
Planera microphylla Newby. Later Extinct Floras, p. 55, 1868. 
Fort Union group: Fort Union, North Dakota. 
Planera nervosa Newby. Proc. U. S. Nat. Mus., vol. v, p. 508, 1882 
[1883]. 
Eocene: Green River, Wyoming. 
Planera TJngeri Ett. Foss. Fl. v. Wien., p. 11, pi. ii, f.o-18, 1851 5 Lx. ? 
Bull. U. S. Geol. and Geogr. Surv. Terr., vol. i, p. 387, 1875 [1876J; 
Aim. Rept. loc. cit., p. 313, 1874 [1876]; Tert. FL, p. 190, pi. xxvii, f. 7, 
1878. 
Planera dubia Lx. Am. Journ. Sci., vol. xxviii, p. 361, 1859. 
Planera longifolia? Lx. Ann. Rept., op. cit., p. 371, 1872 [1873]. 
Miocene: John Day Valley, Oregon. 
Green River group : Florissant, Colorado. 
Eocene: Port Graham, Alaska; Bellingnam Bay! 
Planera variabilis Newby. Proc. U. S. Nat. Mus., vol. v, p. 508, 1882, 
[1883]. 
Eocene: Green River, Wyoming. 
PLATSANTHUS Newberry. Fl., Amboy Clays, p. 125, 1895 [1896]. 
Platceanthus (Williamsonia) problematicns Newby. Fl., Amboy 
Clays, p. 125, pi. xxxv, f. 1-9, 1896. 
Amboy clay, New Jersey. 
PLATANINXTJM Unger. In Endlicher Gen. PI., suppl. ii, p. 101, 
18—. [Not seen.] 
Plataninimn Haydeni Felix. Zeitschr. d. Deutsch. geol. Gesell., Jalir 
1896, p. 251, 1896. 
Miocene: Amethyst Mountain, Yellowstone National Park. 
PLATANOPHYLLUM Fontaine. Potomac Fl., p. 316, 1889. 
Platanophyllani crassinerve Font. Potomac Fl., p. 316, pi. clviii, f. 
5, 1889. 
Potomac formation : Deep Bottom, Virginia. 
PLATANUS (Tournefort) Linnaeus. Hort. Cliff, p. 417, 1737. 
Platanus aceroides Gopp. Zeit. Deutsch. Geol., Gesell., vol. iv., p. 
492, 1852 • Lx., Am. Journ. Sci., vol. xlv, 2d ser., p. 206, 1869; Tert. 
FL, p. 184, pi. xxv, f. 4-6, 1878. 
Fort Union group: Bad Lands, Dakota. 
Livingston beds: Bozeman coal field, Moutana. 
Denver group: Golden, Colorado. 
Denver group!: Carbon, Wyoming. 
Laramie group: Black Buttes, Wyoming. 
Miocene: John Day Valley, Oregon ; Mackenzie River. 
