“ 
Mesozoic and Cenozoic Geology and Paleontology. a 
of that stream. That not a fragment of rock had been transported 
even from so short a distance as beyond the drainage west of the 
‘Sawatch, or east of the Park ranges. He placed the superficial de- 
posits in one great period, extending from the Pliocene up to the 
present time, because in the aggregate they afford no proof of any 
break in the order of time. In the valley of Roaring Fork in the Elk 
mountains, the morainal deposits are remarkable for their thickness. 
The surface is covered with huge bowlders, some angular, and others 
partially rounded. The terraces are very conspicuous, rising, in some 
instances, to 1,000 feet or more above the bed of the stream, and 
strewed over with huge bowlders. . None of the stray materials in any 
of the valleys or gorges seem to have been transported a very great 
distance, and never, under any circumstances, is there any drift or 
vlacial deposits from a neighboring drainage ; in other words, the 
loose material does not pass from one independent valley to another. 
So it is all over the Rocky mountain region. All the drift or Post- 
pliocene deposits are local. 
Prof. E. D. Cope* described, from the Eocene of New Mexico, the 
giant bird Diatryma gigantea; and from the Pliocene, phosphate beds 
of South Carolina, Cyclotomodon vagrans. 
Prof. 0. C. Marsh+ described, from the Eocene of the Rocky moun- 
tain region, Hohippus validus, EH. pernix, Parahyus vagus, Dromo- 
cyon vorax, Dryptodon crassus, and Coryphodon hamatus. 
Dr. Joseph Leidy{ described, from the Eocene of New Jersey, Wy- 
liobates fastigiatus, and M. jugosus; from the Pliocene beds of Ash- 
ley river, South Carolina, Belemnoziphius prorops, Choneziphius liops, 
C. trachops, Etoroziphius coelops, Proroztphius macraps, Myliobates 
magister, M. mordazx, and Proroziphius chonops. 
Prof. C. A. White§ described, from the Eocene at Bijou basin, 
40 miles east of Denver, Colorada, Corbicula powelli, Mesodesma, 
bishopi, Phorus exoneratus ; from Crow creek, Melaniva larunda; from 
the West, Tulotoma thompsoni; from the Lower Green River Group, 
8 miles below Green River station, Wyoming, Helix riparia ; from the 
Upper Green River Group, at Henry’s Fork and Alkali station, Unio 
shoshonensis, Succinea papillispira, Pupa incolaia, and P. arenula. 
Prof. F. B. Meek] described, from the White River Group, on 
Pinot’s creek, Limnewa shumardi. 
* Proc. Acad. Nat. Sci. 
j Am. Jour. Sci. and Arts, 3d ser., vols. xi and xii. 
_t Proce. Acad. Nat. Sci. 
2 Geo. of Uinta Mountains. 
| Hayden’s U.S. Geo. Sur. Terr. 
