An Introduction to the Study of Mammals Living and Extinct

Africa America animal antlers aperture appears body bones brachydont broad cæcum canines Carnivora cavity cervical vertebræ Cetacea characteristic characters claws closely allied colour compressed crowns curved cusps Deer dentition developed digits distinct dorsal dorsal fin ears elongated enamel Eocene Europe existing species external extinct extremely flattened fore feet fossil frontal genera genus glands habits hair hallux hind feet horns hypsodont incisors India inner known lachrymal larger latter length less limbs lobe lower jaw male mammæ mammalian mammals mandible Marsupials maxilla membrane Miocene molar teeth narrow nasal nearly North orbit outer Palearctic peculiar Perissodactyle phalanges Pleistocene Pliocene portion posterior premaxillæ premolars present Proc region represented resembles ridges Rodents rudimentary short side Sirenia skull slender smaller South structure Subfamily Suborder surface tail toes tooth transverse typical Ungulata Ungulates upper incisors upper jaw upper molars usually Whale Zool