knowlton.] TERTIARY PLANTS OF NORTH AMERICA. 233 
Trapa borealis Heer. PI. Foss. Alask., p. 38, pi. viii, f. 9-14, 1869; 
Dn., Eept. on Geol. and Res. near 49th Parallel, Appen. A, p. 330, 
pi. xvi, f. 10, 1875. 
Belly River series: Vermilion River. 
Eocene?: Port Graham, Alaska. 
Lower Laramie group: Red Deer and Rosebud rivers, Canada. 
Trapa? microphylla Lx. Bull. U. S. Geol. and Geogr. Surv. Terr., 
vol. i, p. 309, 1875 [1870] ; Ann. Rept. II. S. Geol. and Geogr. Surv. 
Terr. p. 304, 1874 [1876]; Lx., Tert. Fl., p. 295, pi. lxi, f. 16-17ff, 
1878 ; Ward, Bull. IT. S. Geol. Surv., no. 37, p. 04, pi. xxviii, f. 2-5, 
1887. 
?Neuropteris angulata Newby. Rept. Colo. River of the West, by Ives, 
p. 131, pl.iii, f.5, 1861. 
Upper Laramie group: Great Valley. 
Fort Union group: Burns's Ranch, Montana. 
Laramie group : Converse County, Wyoming. 
Montana group: Point of Rocks, Wyoming. 
Lower Laramie group: Bad Lands, Red Deer and Rosebud rivers, 
and Pincher Creek, Canada. 
Trapa? occidentalis Kn. Eighteenth Ann. Rept. U. S. Geol. Surv. 
pt. iii, p. 734, pi. cii, f. 76, 1898. 
Payette formation : Idaho City, Idaho. 
Trapa sp., Kn. Bull. Geol. Soc. Am., vol. viii, p. 142, 1897. 
Laramie group!! "Dutton Creek coal," Wyoming. 
TRICALYCITES Newberry. Fl. Amboy Clays, p. 132, 1895 [1896.] 
Tricalycites papyraceus Newby. Fl. Amboy Clays, p. 132, pi. xlvi, 
f. 30-38, 1895 [1896]; Hollick, Bull. Torr. Bot. Club, vol. xxi, p. 63, pi. 
clxxx, f. 8, 1894. 
Cretaceous: Long Island. 
Amboy clay : Woodbridge, New Jersey. 
TRICARPELLITES Bowerbank. Hist. Foss. Fruits and Seeds, Lon- 
don Clay, p. 76, 1840. 
Tricarpellites striatus Newby. Fl. Amboy Clays, p. 132, pi. xlvi, 
f. 9-13, 1895 [1896]. 
Amboy clay: Woodbridge, New Jersey. 
Trunk No. 1 Font. Potomac Fl., p. 189, pi. clxxiv-clxxviii, 1889. 
Potomac formation. 
Trunk No. 2 Font Potomac Fl., p. 191, pi. clxxix, clxxx, 1889. 
Potomac formation : Maryland. 
TSUGA Carrier. Trait. Conif., p. 185, 1855. 
Tsuga Mertensiana (Bongn.) Carr. Kn., Jour. Geol., vol. iii, p. 531, 
1895. 
Interglacial: Muir Glacier, Alaska. 
