classis Crustacea 
I.subclassis Podophthalma 
1.ordo Decapoda 
1.tribus Brachyura 
2.tribus Anomura 
3.tribus Macroura 
2.ordo Schizopoda 
1.tribus Stomatopoda 
2.tribus Diploöpoda
II.subclassis Edriophthalma 
1.ordo Choristopoda (from
- separate, and – foot ...) 
1.tribus Isopoda 
2.tribus Laemodipoda 
3.tribus Amphipoda 
2.ordo Entomostraca 
1.subordo Gnathostomata (from
- jaw, and – mouth ...) 
1.tribus Branchipodacea Branchipus
2.tribus Limnadiacea Limnadia
3.tribus Daphniacea Daphnia
4.tribus Cyclopacea Cyclops
5.tribus Cypridacea Cypris
2.subordo Cormostomata (from
- trunk, and – mouth ...) 
1.tribus Caligacea Caligus
2.tribus Lernaeacea Lernaea
3.tribus Nymphonacea Nymphon= Pycnogonum
3.subordo Merostomata (from
- thigh, and – mouth ...) 
1.tribus Limulacea Limulus
3.ordo Trilobita 
III.subclassis Mandyata (from
- a cloak ...) 
1.tribus Cirripeda = CIRRIPEDIA
= Balanacea Balanus
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