xii EXTINCT AND VANISHING MAMMALS 



PAGE 



Order ARTIODACTYLA : Even-toed ungulates 256 



Family Cervidae: Deer 257 



The wapiti, or American elk 257 



The caribou 296 



Family Antilocapridae : Pronghorns 322 



The pronghorn antelope 322 



Family Bovidae : Sheep, goats, cattle 329 



The muskoxen 329 



The American bison 337 



The bighorn, or mountain sheep 349 



SOUTH AMERICA 



Order EDENTATA: Edentates 375 



Family Megatheriidae : Giant ground sloths 375 



Order RODENTIA : Gnawing mammals 377 



Family Cricetidae : Hamsterlike rodents 377 



The Galapagos rice rats 377 



Family Myocastoridae : Coypus 383 



Family Dinomyidae: Giant rats 386 



Family Chinchillidae : Chinchillas 389 



Order CARNIVORA: Dogs, cats, and their relatives 396 



Family Ursidae: Bears 396 



Family Canidae: Wolves, dogs, foxes 400 



Order PERISSODACTYLA : Odd-toed ungulates 403 



Family Tapiridae : Tapirs 404 



Order ARTIODACTYLA : Even-toed ungulates 406 



Family Camelidae: Camels, llamas 406 



Family Cervidae : Deer 412 



OCEANIC MAMMALS 



Order CARNIVORA: Dogs, cats, and their relatives 417 



Family Mustelidae: Weasels, martens, otters 417 



Order PINNIPEDIA: Seals, sea-lions, walruses 424 



Family Otariidae: Sea-lions, fur seals 425 



Family Phocidae : Hair seals 447 



Family Odobenidae : Walruses 469 



Order CETACEA: Whales, porpoises, dolphins 477 



Family Iniidae: Fresh-water dolphins 479 



Family Delphinidae : Dolphins and porpoises 480 



Family Ziphiidae: Ziphioid whales 481 



Whaling 484 



Family Physeteridae : Sperm whales 492 



Family Rhachianectidae : Gray whales 495 



