[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       [Order] †Eurypterida Burmeister, 1843 - eurypterids
         [Suborder] †Stylonurina Diener, 1924
           Superfamily †Rhenopteroidea Størmer, 1951 [monotypic]
             Family †Rhenopteridae Størmer, 1951
               1 Genus †Brachyopterella Kjellesvig-Waering, 1966
               2 Genus †Brachyopterus Størmer, 1951
               3 Genus †Kiaeropterus Waterston, 1979
               4 Genus †Leiopterella Lamsdell, Braddy, Loeffler & Dineley, 2010
               5 Genus †Rhenopterus Størmer, 1936