Examining the highlighted area of your specimen, click on the image below which most closely resembles your specimen.
One or both process
(p)
on second left exopod
is neither digitform or blunt
Both process
(p)
on second left exopod digitform and blunt
Taxonomy
Phylum
Arthropoda
Subphylum
Crustacea
Class
Maxillopoda
Subclass
Copepoda
Order
Calanoida
Family
Diaptomidae