Mammals 



'Birds 



JOOOO 



3500 



Reptiles 



3000 



'Amphibians 



700 



Arachnida - 



4000 



Y^ , ]/ (Molluskh 



. \ Tunicata, etc. \ esooo 



Echinodermsr'y^^s^ I /O 



Thread ff^ormsViU j J 



Flat JVormsCf--^ 



noo \~X(\Coeleriterates 



Torifera ^^p\^ '""' 



(\ Protozoa 

 \_y 4000 



