f 



f 



Maa 



Marsupial mammals 



t 



Reptiles 



Moll 



usca 



Sponges 



Placental mammals 



Egg-laying mammals 



Amphibia 



Arthropoda 



Coelenterata 



Protozoa 



Chart II. Genealogical Tree of the Animal Kingdom. 



2l6 



