480 0. C. Marsh—American Pterodactyls, 
nearly equal size, and a small lateral bone, which may possibly 
be the distal end of the fibula. There are four metatarsals of 
nearly the same length, and their ungual phalanges are pointed, 
but not much curved. 
The known species of Pteranodon are as follows: Pteranodon 
occidentalis Marsh ( Ornithochirus harpyia Cope), Pteranodon ingens 
arsh (Ornithochirus umbrosus Cope), Pteranodon velox Marsh, 
Pteranodon longiceps Marsh, and Pteranodon comptus Marsh. 
Nyectosaurus, gen. nov. 
the upper Cretaceous of Western Kansas. The type specimens 
of all the above species are preserved in the Museum of Yale 
College. 
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