Parent taxon: Eurypterina according to J. A. Dunlop et al. 2013
See also Braddy et al. 1995, Dunlop et al. 2020, Tetlie 2002 and Tetlie 2006
Sister taxa: Diploperculata, Megalograptoidea, Moselopteroidea, Onychopterelloidea, Wiedopterus
Subtaxa: Erieopteridae Eurypteridae Paraeurypterus Pentlandopterus Strobilopteridae
Type: Eurypterus
Ecology: nektobenthic carnivore
Distribution:
• Carboniferous of Germany (1 collection), the United Kingdom (1)
• Devonian of Canada (2: Northern Territories, Northwest Territories), Germany (1), Norway (1), United States (4: New York, Ohio, Wyoming)
• Silurian of Canada (4: Northwest Territories, Nunavut, Quebec), China (1), Estonia (3), Norway (6), the Russian Federation (1), Sweden (2), Ukraine (5), the United Kingdom (5), United States (22: Indiana, Maryland, Michigan, Michigan and Ohio, New York, Ohio, West Virginia)
• Ordovician of Turkey (1)
Total: 60 collections including 75 occurrences