Superclass Spirotricha Bütschli, 1889 see Class Spirotrichea Bütschli, 1889 Class Oligotrichea Bütschli, 1889 see Subclass Oligotrichia Bütschli, 1889 Subclass Oligotrichia Bütschli, 1889 Order Choreotrichida Small & Lynn, 1985 Suborder Strobilidiina Small & Lynn, 1985 Family Strobilidiidae Kahl, 1929 Genus Rimostrombidium Jankowski, 1978