Examining the highlighted area of your specimen, click on the image below which most closely resembles your specimen.
Terminal claw distinctly angled in one or two places
Terminal claw with no distinct angles, but may have an irregular bump
(ib)
as depicted above
Taxonomy
Phylum
Arthropoda
Subphylum
Crustacea
Class
Maxillopoda
Subclass
Copepoda
Order
Calanoida
Family
Diaptomidae