Examining the highlighted area of your specimen, click on the image below which most closely resembles your specimen.
Process as long or longer than the second to last segment
Process shorter than the second to last segment, typically no more than half its length
Taxonomy
Phylum
Arthropoda
Subphylum
Crustacea
Class
Maxillopoda
Subclass
Copepoda
Order
Calanoida
Family
Diaptomidae