THE 



FOSSIL BIRDS OF NORTH AMERICA. 





A. — JURASSIC. 



1. Laopteryx priscus Marsh. 



Laopteryx prisons Marsh, Am. Journ. Sci. XXI. i88i, 341. 

 Upper Jurassic beds of Wyoming. 



B. - CRETACEOUS.^ 



2. Apatomis celer Marsh. 



Ichthyornis celer Marsh, Am. Journ. Sci. V. 1873, /4. 

 Apatornis celer Marsh, Am. Journ. Sci. V. 1873, 162. 



Middle Cretaceous of Western Kansas. 



3. Baptomis advenus Marsh. 



Baptornis advenus Marsh, Am. Journ. Sci. XIV. 1877, 86. 



Cretaceous of Western Kansas, in the same beds with Odontornithes 

 and Pteranodontia. 



1 The genera alphabetically arranged. 



