†unranked clade Diploperculata Lamsdell et al. 2013 (eurypterid)
Full reference: J. C. Lamsdell, I. Hosgor, and P. A. Selden. 2013. A new Ordovician eurypterid (Arthropoda: Chelicerata) from southeast Turkey: evidence for a cryptic Ordovician record of Eurypterida. Gondwana Research 23:354-366
Parent taxon: Eurypterina according to J. C. Lamsdell et al. 2013
See also Dunlop et al. 2013, Dunlop et al. 2020 and Lamsdell et al. 2013
Sister taxa: Eurypteroidea, Megalograptoidea, Moselopteroidea, Onychopterelloidea, Wiedopterus
Subtaxa: Adelophthalmoidea Carcinosomatoidea Pterygotioidea Pterygotoidea Waeringopteroidea
Ecology: nektobenthic carnivore