20 
TBE LOUP POPK BEDS. 
The descriptions of fossils of this horizon have been published at the 
following dates and places: 
1874, November 28.—Eeport upon vertebrate fossils discovered in New Mexico, with 
descriptions of new species; by E. D. Cope Annual Keport of the Chief of Engi¬ 
neers. Appendix F F. 
1874. —Annual Eeport of the Chief of Engineers, part 2, p. 591. 
1875, April 17.—Systematic catalogue of Vertebrata of the Eocene of New Mexico, col¬ 
lected in 1874; by E. D. Cope. Geographical and Geological Explorations and 
Surveys West of the One hundredth Meridian, 1875. 
1875.—Proceedings Philadelphia Academy, p. 255. On fossil Lemurs and Dogs. 
1875. —Pi’oeeedings of the Philadelphia Academy, p. 444. On the supposed Carnivora 
of the Eocene of the Eocky Mountains; extras published December 22. 
1876. —Proceedings Philadelphia Academy, p. 10. On a gigantic bird from the Eocene 
of New Mexico; extras published April 18. 
1876.—Proceedings Philadelphia Academy, p. 39. On the Tceniodonta, a new group of 
Eocene Mammalia; extras published April 18. 
1876.—Proceedings Philadelphia Academy, p. 63. On the geologic age of the verte¬ 
brate fauna of the Eocene of New Mexico; extras published April 26. 
1876.—Proceedings Philadelphia Academy, 88. On supposed Leraurine forms of 
the Eocene period. 
Fig. 2. — Sketch taken in the Eocene hacl-lantls of the Galliiias. 
3. -THE LOUP FORK BEDS OF THE VALLEY OF THE RIO GRANDE. . 
The ravines of the south side of the Picuris Mountains, on the east 
side of the liio Grande, are filled Avitli the arenaceous beds of the Santa 
