572 



CENOZOIC TIME. 



Fishes. — Teliosts 



Ganoids, Heterocercal 



Homocercal 



Selachians 



Cestracionts 



Hybodonts 



Squalodonts (Modern Sharks) 



Reptiles 



Labyrinthodonts 



)( Thecodonts 



Enaliosaurs 



Pterosaurs 



Dinosaurs 



Crocodilians 



Genus Crocodilus 



Chelonians, or Turtles 



Birds 



Mammals, exclusive of Man 



Marsupials 



Insectivores 



Rodents 



Edentates 



Chiropters or Bats 



Cetaceans 



Herbivores , 



Perissodactyls , 



Artiodactyls 



Pachyderms 



Proboscidians (Elephant, etc.) 



Ruminants, Stag family , 



Bovine, or Ox family 



Carnivores 



Quadrumana, or Monkeys 



