PALAEONTOLOGY 



Classification of Animal Life 



131 



Sub-kingdoms Classes Examples 



C Mammals Man, cow, horse, sheep, dog, whale, 



etc. ■ 



i Birds Owl, turkey, hawk, sparrow, etc. 

 Vertebrates J . , ■ . 



i Eeptiles Serpents, lizard, tortoise 



| Amphibians Frog, toad, salamander 



I Fishes 



f ("Cephalopoda cuttlefish 



Pteropods 



Gasteropoda, snail, etc. 

 Mollusks { Lamellibranchs, clam, oyster, etc. 

 Brachiopods 

 i Tunicates 

 ^Bryozoans 



CO 



CD 



+3 



a 

 f-i 



£ f Crustaceans, trilobite, crab, lobster 



5 Articu- 



lates i Insects 



l/Worms 



Radiates Corals, starfish, etc. 

 Protozoa Sponges, foraminifera, etc. 



This classification though time-honored and convenient in ele- 

 mentary palaeontology, has been superseded among zoologists by 

 one slightly different, which indicates more truthfully the rela- 

 tions of the various groups or branches in point of development. 



