what is an arthropod

centipede trilobite  
Centipede; photo by Quinet cc-by Trilobite; photo by Jeanseyes cc-by  

 

Sources:

-The Tree of Life - www.tolweb.org:
-The Variety of Life, Colin Tudge, 2000

Citation: García, A.I. 2015. The Tree Of Nature (Online) at http://thetreeofnature.com

 

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