X BULLETIN 16 9, UNITED STATES NATIONAL MUSEUM 



Plates 



Pollowiag 

 page 



1. Reconnaissance map of the mammal-bearing Fort Union group of the 



Crazy Mountain Field, Wheatland and Sweetgrass Counties, Mont. _ 12 



2. Bear and Lebo formations. Crazy Mountain Field, Mont 277 



3. Air views of Fort Union group. Crazy Mountain Field, Mont 277 



4. Air views of Gidley Quarry, Fort Union group, Crazy Mountain Field, 



Mont 277 



5. Air view and site of the Silberling Quarry, Fort Union group. Crazy 



Mountain Field, Mont 277 



6. Melville formation. Crazy Mountain Field, Mont 277 



7. Fort Union primates: Palaechthon alticuspis Gidley and Paromomys 



maturus Gidley, right lower jaws 277 



8. Fort Union primates: Pronothodectes matthewi Gidley and Paromomys 



maturus Gidley, left lower jaws 277 



9. Fort Union primates: Plesiadapis gidleyi (Matthew), Pronothodectes 



matthewi Gidley, Plesiadapis rex (Gidley), Palaechthon alticuspis 

 Gidley, Paromomys depressidens Gidley, and undetermined species, 



dentition 277 



10. Fort Union primates: Palenochtha minor (Gidley), Elphidotarsius 



fiorencae Gidley, and Pronothodectes matthewi Gidley, lower jaws 277 



