Phylum Bigyra Cavalier-Smith, 1998 Subphylum Sagenista Cavalier-Smith, 1995 Class Labyrinthulea Olive ex Cavalier-Smith, 1986 Superfamily Amphifiloidea Cavalier-Smith, 2012 Family Sorodiplophryidae Cavalier-Smith, 2012 [monotypic] Genus Sorodiplophrysᵀ Olive & Dykstra, 1975 Sorodiplophrys stercoreaᵀ (Cienkowski, 1876)