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Taxon Taxonomy ID Rank Common Name
 
  Sistrurus  ↑
8755 genus
 
 8756 species massasauga
 
 496732 subspecies
 
 8762 subspecies desert massasauga
 
 8758 species pigmy rattlesnake
 
 8759 subspecies dusky pigmy rattlesnake
 
 610335 subspecies
 
 253282 subspecies
 
 8757 species Western massasauga