. A catalogue of the Cretaceous and Tertiary plants of North America [microform]. Paleobotany; Paleobotany; Paléobotanique; Paléobotanique. TERTIARY PLANTS OF NORTH AMKRICA. 181 Populus smilacifolia Newby. Later I'-xtinct Floras, ]>. (1(5, 1S(;8. Fort Union group: Fort Union, Xortli Dakota. Populus speciosa Ward. Hull. r. S. Geol. Surv., no. ,'{7, j). 2(», pi. v, f. 4-7, 1887. Fort Union uTouj): Clear Creek, Montana. Populus stygia Ileer. Fl. Foss. Arct., vol. iii, apt. ii, \). 107,; Lx. Fl. Dak. (Jr., p. 14, pi. iii, f. 12, 1892. Dakota group: Kansas. Populus subrotunda Lx.
. A catalogue of the Cretaceous and Tertiary plants of North America [microform]. Paleobotany; Paleobotany; Paléobotanique; Paléobotanique. TERTIARY PLANTS OF NORTH AMKRICA. 181 Populus smilacifolia Newby. Later I'-xtinct Floras, ]>. (1(5, 1S(;8. Fort Union group: Fort Union, Xortli Dakota. Populus speciosa Ward. Hull. r. S. Geol. Surv., no. ,'{7, j). 2(», pi. v, f. 4-7, 1887. Fort Union uTouj): Clear Creek, Montana. Populus stygia Ileer. Fl. Foss. Arct., vol. iii, apt. ii, \). 107,; Lx. Fl. Dak. (Jr., p. 14, pi. iii, f. 12, 1892. Dakota group: Kansas. Populus subrotunda Lx. Am. Journ. Sci., vol. xlv, p. 205, 18G8. Populus atteuuata Al. Br. Lx., Am. Jouru. .Sci., vol. xlv, p. 205,18(!H. Populus Kulu-otundiitii Lx. Tcrf. I'l., p. 17:?, pi. xxiv, f. G-8, 1878. : Carbon and I'^vanston, Wyoming; Ivock Creek and Laramie Plains, Wyoming; (lolden, Colorado? Populus subrotundata Lx. ~ I'opulus subrotunda. Populus tenuinervata Lx. Lull. i\("»l., vol. xvi, ]). 48, LShS. Denver group: (rolden, Coloi'ado. Populus trinervis Dn. Trans. Koy. Soc., Canada, vol. i, sec. iv, \k 2(>, 1882 [1883]. Upper Cretaceous: I^Tanaimo; Raynes Sound. Populus Ungeri Lx. Tert. Fl., p. 175, i>l. xxiv, f. 5, 1878. Populus Ilt'liailuinllug. Lx. Auii. Kept. U. S. Geol. ami Geogr. Surv, Terr., ,1873 [1874]. Denver group: Golden, Colorado. Populus Whitei Ward. Bull. U. S. Geol. Surv., no. 37, p. 22, pi. viii, f. 4, 1887. Fort Union group: Burns's Kancli. Montana. Populus Zaddachi lleer. Fl. Tert. Helv., vol. iii, p. 307,); Lx., Ann. Kept. U. S. Geol. and Geogr. Surv. Terr., p. 292, 1871 [1872]; (Jret. and Tert. Fl., p 156, pi. xxxi, f. 8, 1883. Eocene?: Port Graham, Alaska. Miocene: Chalk BluflFs, California. Green IJiver group: I'lorissanr, Colorado. Fort Union group: Montana and Dakota. Populus sj)., Dn. (icol. Surv. Canada, liept. of Progress for 1872-73. Appen. I, p. 08, 1873. Cretaceous: Vancouver Island, British Columbia. Populus sp. [Wood], D
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