Class †Algospongia Termier, Termier & Vachard, 1977, incertae sedis
Count: [†g] †2o;17f;89g [31 Oct 2015]
   Order †Aoujgaliida G. Termier et al., 1975
  Count: [†g] †6f;25g [31 Oct 2015]
     Suborder †Aoujgaliina
    Count: [†g] †4f;20g [31 Oct 2015]
       Family †Stacheiidae
      Count: [†g] †2g [31 Oct 2015]
         1 Genus †Stacheia Brady, 1876
        Count: -
         1.0 [Genus †Conilalia Vachard, 1979] see Genus Stacheia Brady, 1876
        Count: -
         2 Genus †Fourstonella Cummings, 1955
        Count: -
         2.1 [Genus †Amorfia L. Rácz (1964)] see Genus Fourstonella Cummings, 1955
        Count: -
         2.2 [Genus †Chuvashovia Vachard, 1981] see Genus Fourstonella Cummings, 1955
        Count: -
         2.3 [Genus †Efluegelia Vachard, 1979] see Genus Fourstonella Cummings, 1955
        Count: -
         2.4 [Genus †Foliophycopsis Gaillot, 2006] see Genus Fourstonella Cummings, 1955
        Count: -
         2.5 [Genus †Parastacheia B. Mamet & A. Roux (1977)] see Genus Fourstonella Cummings, 1955
        Count: -