SCIENCE OE EOSSIL REMAINS 339 



Leidy, Cope, and Marsh. — Among the early explorers of 

 the fossils of the West must be named Joseph Leidy, E. D. 

 Cope (Fig. 100), and O. C. Marsh. These gentlemen all 

 had access to rich material, and all of them made notable 

 contributions to the science of palaeontology. The work of 



Fig. ioi. — O. C. Marsh, 1831-1899. 



Cope (1840-1897) is very noteworthy. He was a compar- 

 ative anatomist equal to Cuvier in the extent of his knowl- 

 edge, and of larger philosophical views. His extended publi- 

 cations under the direction of the United States Government 

 have very greatly extended the knowledge of fossil vertebrate 

 life in America. 



