116 



CENOZOTC MAMMAL HORIZONS 



UPPER MIOCENE AND FLOWER PLIOCENE— Continued. 



CARNIVOKA— Continued. 

 ? Procyonid^. 



Leptarctus primus \Andy. 



1. 1 2. 



3. 4. 



MUSTELII)^:. 



Mustela minor Douglass 



Putorius nambianus (Cope) | 



Potamotheriuin robustum (Cope) j x 



Potamotherium lacota Matthew 1 



Lutra pristina Matthew. 



Brachypsalis pachycephalus Cope. 



"Machserodus" catocopis Cope 



? Machserodus raaximus Scott & Osborn. 



? Machserodus augustus Leidy 



? Machserodus orassidens Cragin 



Pseudselurus intrepidus Leidy 



RODENTIA. 



SCIURID^. 



Sciurus arctomyoides Douglass 



Palsearctomys montanus Douglass. . . 

 Palsearctomys macrorhinus Douglass. 



Palsearctomys vetus (Marsh) 



Cynomys sp 



Castorid^. 



Eucastor (=Dipoides) tortus Leidy 

 Sigmogomphius lecontei Merriam. . . 



Mylagaulid^:. 



Mylagaulus sesquipedalis Cope. . 



Mylagaulus monodon Cope 



Mylagaulus pristinus Douglass. . 

 Mylagaulus proximus Douglass. 

 Mylagaulus paniensis Matthew. 

 Epigaulus hatcheri Gidley 



Geomyid^. 

 Geomys bisulcatus Marsh 



MURID^. 



Hesperomys (= Peromyscus) loxodon (Cope). 



Leporid^. 



Panolax sanetsefidei Cope 



Lepus sp 



Bijou Hillf^ 



X 



X 1 X 



PROBOSCIDEA. 



Elephantid^. 



Trilophodon (= Gomphotherium) productus Cope 



Trilophodon (= Gomphotherium) euhypodon Cope 



Trilophodon (= Gomphotherium) campester Cope 



Trilophodon (= Gomphotherium) praecursor Cope 



Trilophodon (= Gomphotherium) floridanus Leidy 



PERISSODACTYL.A. 



Rhinocerotid^. 



Teleoceras fossiger Cope 



Teleoceras erassus (Leidy) 



Teleoceras sp. div 



Peraceras superciliosus Cope ! \ 



? Aphelops malacorhinusCope ! j 



? Aphelops eeratorhinus Douglass | \ 



? Aphelops jemezanus Cope | i 



? Aphelops i)rachyodus Osborn ! j 



Tapirid^. 



Tapiravus rarus Marsh «. 



X I X 



« Recorded as corning from the " lower Pliocene, east of the Rocky Mountains. 



