Chelicerata Heymons, 1901 †Eurypterida Burmeister, 1843 - eurypterids †Eurypterina Burmeister, 1843 Superfamily †'Eurypteroidea' Burmeister, 1843 [monophyletic?] Family †Strobilopteridae Lamsdell & Selden, 2013 1 Genus †Buffalopterus Kjellesvig-Waering & Heubusch, 1962 2 Genus †Strobilopterus Ruedemann, 1935