THE 



FOSSIL BIRDS OF NORTH AMERICA. 



A. — JURASSIC. 



1. Laopteryx priscus Marsh. 



Laopteryx priscus Marsh, Am. Journ. Sci. XXI. 1881, 341. 

 Upper Jurassic beds of Wyoming. 



B. — CRETACEOUS. ^ 



2. Apatornis celer Marsh. 



Ichthyornis cehr Marsh, Am. Journ. Sci. V. 1873, 74. 

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



Middle Cretaceous of western Kansas. 



3. Baptornis advenus Marsh. 



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



Cretaceous of western Kansas, in the same beds with Odontor- 

 nithes and Pteranodontia. 



4. Cimolopteryx rarus Marsh. 



Cimolopteryx rarus Marsh, Am. Journ. Sci. XLIV. 1892, 175, 

 pi. iii, fig. 2. 



Laramie beds of Wyoming. 



5. Cimolopteryx retusus Marsh. 



Cimolopteryx retusus Marsh, Am. Journ. Sci. XLIV. 1892, 175. 

 Laramie beds of Wyoming. 



* The genera alphabetically arranged. 



