88 GUIDE TO THE FOSSIL MAMMALS AND BIRDS. 



Table-case little flying bird with keeled sternum, Ichthyornis (Fig. 85), 

 has also been found in the Kansas Chalk, but is not 

 represented in the collection. Its teeth are in distinct 

 sockets, and some of its vertebrae are biconcave. 



Fig. 84. — Skeleton of a toothed flightless bird, Hesperornis regalis, from the 

 Cretaceous of Kansas, U.S.A. ; about one-eighth nat. size. (After 

 Marsh. See Table-case 13.) 



Table-ease Among quite recently exterminated Carinatse from the 

 Case'cc. sou th er]1 hemisphere, the rails from New Zealand (Aptomis), 



