UNITED STATES ^ MF.XU'AN BOUN DAHY 



PALEONTOLOGY 



( Cretaceous ) 



PI. 10. 



K Gacni sc 



F B.Meek del 



1 tXOCy-A COSTATA 2 G-YPH^A P.TCHtR. 3 05TREA SUBSPAT.LATA <. OSTHEA BtUA -. 05TREA .UGUBRIS 6 OSTRCA CAR.NATA 



