

l)rauiii;;s hy Uoiu-rt UlaitiiiT 



THE FAMILY TREE OF ANIMAL LIFE 



The farther a type is from the base of the trunk, the more complex and the more 

 distinctive it is, as a rule. If we suppose that each living form descended from an- 

 other plant or animal, the arrangement suggests that in the course of time species 

 departed from ancestral types 



