178 ANNALS NEW YORK ACADEMY OF SCIENCES 



1893. 1. Cannon, George L., Jr. : "The geology of Denver and vicinity." 

 Colo. Sci. See, Proc, vol. iv, pp. 235-270, 1893. [Account of the early 

 dinosaur collecting and description of the section at Morrison, Colorado.] 



1894. 1. WooDwoRTH, J. B. : "The relation between base-leveling and organic 

 evolution." Amer. Geol., vol. xiv, pp. 209-235, 1894. [Review of the 

 various theories concerning land erosion, discussion of the effect of river 

 changes on organisms and their distribution, and the relation of the de- 

 velopment of the .Jura-Cretaceous peneplain with the contemporaneous 

 fauna and flora, and general summary of the facts presented. Reptiles,' 

 and particularly the dinosaur group, correlated in development with the 



• growth of the peneplain.] 

 1894. 2. Cross, Whitman : "Pike's Peak, Colorado, quadrangle." U. S. Geol. 

 Surv., Geol. Atlas, Folio No. 7, 7 pp., 5 maps, 1894. [Descriptions of the 

 Morrison formation, including the Oil Creek locality. Proposal of the 

 name Morrison.] 



1894. 3. Eldridge, G. H., and Emmons, S. F. : "Anthracite-Crested Butte, 

 Colorado, quadrangle." U. S. Geol. Surv., Geol. Atlas, Folio No. 9, 10 pp.. 

 8 maps, 1 section sheet, 1894. [Description of the Gunnison formation 

 and proposal of the name Gunnison.] 



1895. 1. Marsh, O. C. : "Restoration of some European dinosaurs, with sug- 

 gestions as to their place among the reptilia." Amer. Journ. Sci., 3rd ser., 

 vol. 1, pp. 407-412, 1 fig., 4 pis., 1895. [Morrison equal to Wealden in age, 

 and both are Jurassic. Restorations of Morrison dinosaurs.] 



1896. 1. Emmons, S. F., Cross, Whitman, and Eldridge, G. H. : "Geology 

 of the Denver basin in Colorado." U. S. Geol. Surv., Monograph, No. 27, 

 556 pp., 31 pis., 102 figs., 1896. [Morrison formation deposited in a de- 

 pression following Jurassic movement. The formation is Lower Creta- 

 ceous in age.] 



1896. 2. Marsh, O. C. : "Vertebrate Fossils" [of the Denver basin.] U. S. 



Geol. Surv., Monograph, No. 27, pp. 473-527, pis. 21-31, figs. 23-102, 1896. 



[Notes on the Hallopus, Baptanodon and Atlantosaurus beds. The latter 



two are Jurassic in age.] 

 1896. 3. Ward, L. F. : "Some analogies in the lower Cretaceous of Europe 



and America." U. S. Geol. Surv., 16th Ann. Rep., pt. 1, pp. 452-463, pis. 

 . 97-107, figs. 67-69, 1896. [Comparison in detail of the Potomac and Weal- 

 den. Discussion of origin and description of the flora.] 

 1896. 4. Woodward, Arthur S. : "Note on the affinities of the English 



Wealden fish-fauna." Geol. Mag., decade ili, No. 380, pp. 69-71, 1896. 



[The Wealden estuary the last refuge of the Jurassic fish-fauna.] 

 1896. 5. Marsh, O. C. : "Age of the Wealden." Amer. Journ. Sci., 4th ser., 



vol. i, p. 2.34, 1896. [From the evidence of the fossil fishes the Wealden 



is Jurassic] 

 1896. 6. Marsh, O. C. : "The geology of Block Island." Amer. Journ. Sci., 



4th ser., vol. ii, pp. 295-298, 375-377, 1896. [Jurassic of the Potomac type 



present.] 

 1896. 7. Marsh, O. C. : "The Jurassic formation on the Atlantic Coast." 



Sci., N. S., vol. iv, pp. 805-816, 1896. [Evidence for Jurassic age of the 



Potomac deposits.] 



