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Full text of "The phyla and classes of animals : arranged to show their supposed relationships"



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Note: — Classes which are entirely extinct are 
represented hy name only ; those which consist 
of minute or microscopic forms have, the repre- 
sentative enclosed in a circle. The approximate 
degree of enlargement or reduction is indicated 
by the small figures near each picture. 




The Phyla and Classes of Animals Ar- 
ranged to show their Supposed Relation- 
ships. 

Copyright, 19011, by W. P. Hay. 




SMITHSONIAN INSTITUTION LIBRARIES 




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