206 



GEOLOGICAL BIOLOGY. 



THE CLASSES OF THE ANIMAL KINGDOM AND THEIR GEOLOGICAL RANGE 

 GROUPED IN BRANCHES ACCORDING TO CLAUS AND SEDGWICK. 



i. Protozoa 



2. Coelenterata 



3. Echinodermata 



4. Verities 



5. Molluscoidea 



6. Mollusca 



7. Tunicata 



8. Arthropoda 



9. Vertebrata 



Monera . . . . 



Rhizopoda . . . 



Infusoria . . . . 



Spongia . . . . 



Anthozoa . . 



Hydromedusa . . 



Ctenophora . . . 



Crinoidea . . . 



Asteroidea . . . 



Echinoidea . . . 



Holothurioidea 

 f Platyhelminthes . 



Nemathelminthes 



Gephyrea . . . 



Rotifera . . . . 



Annelida . . . 

 ( Bryozoa . . . . 

 ' Brachiopoda . . 

 f Lamellibranchiata 

 J Gastropoda . . . 

 (. Cephalopoda . . 



Tunicata .... 

 T Crustacea . . . 



Arachnoidea . . 



Myriapoda . . . 



Insecta . . . . 



Pisces 



Amphibia . . . 



Reptilia . . . . 



Aves 



Mammalia . . . 



B 



Cr 



K 



Q.R 



