lOO 

 lOO 

 lOO 

 lOO 

 lOI 

 lOI 



1 02 



102 



CONTENTS xi 



DocoDONTiDAE, ncw name 84 



Docodon Marsh 1881 86 



Docodoii victor (Marsh 1880) 9° 



Docodon striatus Marsh 1881 93 



Docodon crassus (Marsh 1887) 94 



Docodon affinJs (Marsh 1887) 94 



Docodon superus, new species 95 



B. MAMMALS OF THE UPPER CRETACEOUS FORMATIONS 97 



MULTITUBERCULATA Cope 1884 



Placiaulacoidea Simpson 1925 



Ptilodontidae Simpson 1927 



Paronychodon Cope 1876 



Paronychodon lacustris Cope 1876 



Menisco'essus Cope 1882 



Menisco'essus conquistus Cope 1 882 



Menisco'essus borealis Simpson 1927 



Menisco'essus robustus {'^2irsh i%9>Qi) 102 



Cimolomys Marsh 1889 I07 



Cimolomys gracilis M3.r?,h 1889 108 



Cimolomys -priniaevtcs (Lambe 1902) "4 



Essonodon Simpson 1927 ii4 



Essonodcm browni Simpson 1927 "4 



MARSUPIALIAIlliger 1811 "4 



DiDELPHiiDAE Gray 1821 ^^" 



A. Genera including Upper Molars ii7 

 Pediomys Marsh 1889 1^7 

 Pediomys elegans Marsh 1889 "8 

 Pediomys hatcher i ( Osborn 1 898 ) 118 

 Nyssodon Simpson 1927 

 Nyssodon functidens Simpson 1927 

 Didelfhodon Marsh 1889 

 Didelfhodonvorax'^\.2ir^\ii9>%9 122 

 Thlaeodon Cope 1892 124 

 Thlaeodon fadanicus Cope 1892 125 

 Ectoconodon Oshorn \9,()^ 125 

 E ctocofiodon fetersoni Oshorn 1898 125 

 ALfhadon Simpson 1927 126 

 Alfhadon marshi Simpson 1927 126 

 Didelfhodontine incertae sedis 127 



B. Lower Jaws and Teeth 127 

 Eodelfhis Matthew 1916 ^^7 



120 

 120 

 122 



