Chelicerata Heymons, 1901 †Eurypterida Burmeister, 1843 - eurypterids †Stylonurina Diener, 1924 Superfamily †Mycteropoidea Cope, 1886 Family †Drepanopteridae Kjellesvig-Waering, 1966 [monotypic] 1 Genus †Drepanopterus Laurie, 1893