[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
               Genus †Leiopterella Lamsdell, Braddy, Loeffler & Dineley, 2010