338 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



years. He had devoted his attention mainly to the extinct 

 vertebrates of the cretaceous and tertiary formations, and had 

 obtained more than 200 species new to science, 150 of which 

 he had already described. Among the new types of fossils 

 thus discovered, were Pterodactyls, or Omithosaurians, the 

 first detected in this country. He had described three species 

 of these from the cretatecons of Kansas, all of gigantic size. 

 A second and quite unexpected discovery, of great interest, 

 was that of the Iehthyornidw,ox cretaceous birds with bi- 

 concave vertebrae, two species of which he had recently de- 

 scribed. A third new type of fossils, not before observed in 

 America was extinct Chii'optera, or bats, three species hav- 

 ing been found in the eocene of Wyoming. A fourth discov- 

 ery was that of extinct Marsupials, also from the eocene, and 

 represented by several species. A fifth group of special in- 

 terest was fossil Quadrumana, which he had recently shown 

 were comparatively numerous in the eocene. Professor Marsh' 

 stated that he had found indications of fossil monkeys in 

 Wyoming more than a year before, but had delayed announc- 

 ing the discovery until the evidence was conclusive. The 

 sixth discovery of importance, and perhaps the most interest- 

 ing of all, was that of the gigantic eocene mammals just 

 referred to, and which he had assigned to a new order, 

 Dlnocerea. 



