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68. Hayden, F. V. Geology of the Missouri Valley. Prel. Rep. U. S. Geol. 
Surv. of Wyoming, etc., pp. 85-112. 
68>. Meek, F. B. Preliminary Paleontological Report: Lists and Descriptions 
of Fossils. Ibid., pp. 287-318. 
69. Lesquereux, Leo. On the Fossil Plants of the Cretaceous and Tertiary 
Formations of Kansas and Nebraska. Prel. Rep. U. S. Geol. Surv. 
Wyoming, etc., pp. 370-381. 
69b. Elliott, R.S. Report on the Industrial Resources of Western Kansas and 
Eastern Colorado. Prel. Rep. U. S. Geol. Surv. Wyoming, etc., pp. 
442-458, 
70. Newberry, J.S. Age of the Sandstone at Fort Harker. Proc. N. Y. Lye. 
Nat. Hist., 2: 25-32. 
1872. 
71. Cope, E. D. On the Geology and Paleontology of the Cretaceous of Kan- 
sas. Fifth Annual Rep. U.S. Geol. and Geog. Surv. Terr., pp. 318-349. 
72. Hayden, F. V. Map of Nebraska and Dakota and Portions of the States 
and Territories Bordering Thereon. Final Rep. U. S. Geol. Surv. Neb. 
73. Lesquereux, Leo. Enumeration and Description of Fossil Plants Obtained 
by Doctor Hayden in 1871 and 1872. Annual Rep. U.S. Geol. and Geog. 
Surv. Terr., pp. 283-303. 
74. Lesquereux, Leo. Cretaceous Strata; also Remarks on Cretaceous Species. 
Preliminary Rep. U. S. Geol. Surv. of Montana, pp. 301-304. 
1873. 
75. Hayden, F. V. Introduction to Third Annual Report of the U. S. Geolog- 
ical Survey of the Territories, pp. 109-111. 
75b. Leidy, Joseph. Descriptions of Remains of Reptiles and Fishes from the 
Cretaceous Formations of the Interior of the United States. Rep. U.S. 
Geo]. Surv. Terr., vol. I, pp. 266-310. 
75c. Leidy, Joseph. Notice of some Remains of Fishes from the Carboniferous 
Formations of Kansas. Ibid., pp. 311-354. Mentions numerous fossils 
from the Cretaceous of Kansas. 
76. Lesquereux, Leo. Descriptions of Species of Fossil Plants from the Creta- 
ceous of Kansas. Sixth Ann. Rep. U. S. Geol. Surv. Terr., 1872, pp. 
421-497. 
76b. Meek, F. B. Preliminary Paleontological Report, consisting of lists and 
descriptions of fossils. etc. Ibid., pp. 429-518. 
77. Mudge, B. F. Red Sandstone of Central Kansas. Trans. Kans. St. Bd. 
Agr. (Dept. Kans. Acad. Sci.), 1872, pp. 394-396. 
78. Mudge, B. F. Geology of the Arkansas. Trans. Kans. St. Bd. Agr. (Dept. 
Kans. Acad. Sci.), 1872, pp. 408-410. 
79. Saunders, Wm. H. Coals of Kansas. Trans. Kans. St. Bd. Agr. (Dept. 
Kans. Acad. Sci.), 1872, p. 389. 
80. White, C. A. The Eastern Limits of the Cretaceous Deposits in Iowa. 
Am. Jour. Sci., 5: 66-69. 
1874. 
81. Lesquereux, Leo. The Cretaceous Flora. Rep. U. S. Geol. Surv. Terr., 
vol. VI. 
81b. Lesquereux, Leo. A Review of the Cretaceous Flora of North America. 
Ann. Rep. U. S. Geol. and Geog. Surv. Terr., 1874, pp. 316-365, with 
eight plates. 
82. Mudge, B. F. Report of Preliminary Geological Survey of Kansas. Third 
Ann. Rep. Kans. St. Bd. Agr., pp, 102-110. 
