fossil marine animal genera Linnaeus, 1758 - animals Phylum Ciliophora Doflein, 1901 - ciliates Class Polyhymenophora Jankowski, 1967 see Class Spirotrichea Bütschli, 1889 Order Spirotrichia see Class Spirotrichea Bütschli, 1889 [Suborder] Hypotrichina see Subclass Hypotrichia (Stein, 1859) Cavalier-Smith, 1993