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Taxonomy
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Subgenus Trisellescens

Phylum Arthropoda - Arthropods
Subphylum Crustacea - Crustaceans
Class Malacostraca - Malacostracans
Superorder Eucarida - Eucarida (Crabs, Crayfish, Shrimp, etc.)
Order Decapoda - Crabs, Crayfishes, Lobsters, Prawns, and Shrimp
Infraorder Astacidea - Crayfishes and Lobsters
Superfamily Astacoidea - Crayfish
Family Cambaridae
Genus Orconectes
No Taxon Subgenus Trisellescens

Species validus - Powerful Crayfish
Species immunis - Calico Crayfish