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Examining the highlighted area of your specimen, click on the image below which most closely resembles your specimen.
  
1st antennae contains12 or fewer segments
1st antennae contains16 or more segments
 
 
Taxonomy
Phylum Arthropoda
Subphylum Crustacea
Class Maxillopoda
Subclass Copepoda
Order Cyclopoida
Family Cyclopidae