Chelicerata Heymons, 1901 †Eurypterida Burmeister, 1843 - eurypterids †Eurypterina Burmeister, 1843 Superfamily †'Eurypteroidea' Burmeister, 1843 [monophyletic?] Family †Dolichopteridae Kjellesvig-Waering & Størmer, 1952 1 Genus †Clarkeipterus Kjellesvig-Waering, 1966 2 Genus †Dolichopterus Hall, 1859 3 Genus †Ruedemannipterus Kjellesvig-Waering, 1966