6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I3I 



Ichthyornis tener Marsh 

 Ichthyornis tcner Marsh, Odontornithes, 1880, pp. 151, 198, pi. 30, fig. 8. 



Upper Cretaceous (Niobrara formation) : Wallace County, Kansas. 



Ichthyornis validus Marsh 



Ichthyornis validus Marsh, Odontornithes, 1880, pp. 147, 153, 198, pi. 30, figs. 

 11-14. 



Upper Cretaceous (Niobrara formation) : Near Solomon River, 

 Kansas. 



Ichthyornis victor Marsh 



Ichthyornis victor Marsh, Amer. Journ. Sci., ser. 3, vol. 11, 1876, p. 511. 



Upper Cretaceous (Niobrara formation) : Wallace County (type 

 locality), and Hackberry Creek, near Smoky Hill River, Gove 

 County, Kansas. 



Family APATORNITHIDAE : Apatornitiies 



Genus APATORNIS Marsh 



Apatornis Marsh, Amer. Journ. Sci., ser. 3, vol. 5, Jan. 21, 1873, p. 162. Type, 

 by monotypy, Ichthyornis celer Marsh. 



Apatornis celer (Marsh) 



Ichthyornis celer Marsh, Amer. Journ. Sci., ser. 3, vol. 5, 1873, p. 74. 



Upper Cretaceous (Niobrara formation) : Butte Creek, Logan 

 County, near Smoky Hill River, Kansas. 



Supcrorder NEOGNATHAE: Typical Birds 



Order CAENAGNATHIFORMES : Caenagnatiius 



Family CAENAGNATHIDAE: Caenagnatiius 



Genus CAENAGNATHUS Sternberg 



Caenagnathus Stf.knrerg, Journ. Pal., vol. 14, January 1940, p. 81. Type, by 

 original designation, Caenagnathus collinsi Sternberg. 



Caenagnathus collinsi Sternberg * 



Caenagnathus collinsi Sternberg, Journ. Pal., vol. 14, January 1940, p. 81, 

 figs. 1-6. 



Upper Cretaceous (Pale beds. Belly River series) : Quarry No. 112, 

 Steveville map area, near mouth of Sand Creek, Alberta, Canada. 



* This interesting species, known from a nearly complete mandible, is listed in 

 the above superorder tentatively. It is not absolutely certain that it is avian. 



