Fish: unspecified remains

Mammals
  
  Vole 
     Mimomys (Cosomys) primus (named for its occurrence in the Coso Range)
 
  Rabbits 
     Hypolagus ?limnetus
     Pewelagus dawsonae 

  Packrats
     Paraneotoma taylori
  
  Canid 
     Borophagus diversidens 
  
  Peccary
     Platygonus sp.
  
  Large-Headed Llama
     Hemiauchenia sp. 
   
  Horse
     Equus simplicidens 
   
  Bear
     Agriotherium sivalensis
   
  Mastodon
     Mammut cosoensis (named for its occurrence in the Coso Range)