Eurypterida

Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Superphylum: Ecdysozoa
Phylum: Arthropoda
Subphylum: Chelicerata
Classis: †Eurypterida
Ordo: not divided
Superfamiliae: Glyptoscorpioidea - Slimonioidea - Hughmillerioidea - Mixopteroidea - Megalograptoidea - Eurypteroidea - Stylonuroidea - Dolichocephala - Kokomopteroidea - Brachyopterelloidea - Rhenopteroidea - Mycopteropoidea - Pterygotoidea - Incertae sedis

Vernacular name
Internationalization
Ελληνικά: Ευρυπτερίδια (Θαλάσσιοι σκορπιοί)
English: Sea scorpions
Français: Euryptérides
Suomi: Meriskorpionit