Protozoa Goldfuss, 1818 - protozoans Phylum Ciliophora Doflein, 1901 - ciliates Class Kinetofragminophorea - kinetofragminophoreans see Phylum Ciliophora Doflein, 1901 Subclass Gymnostomatia - gymnostome ciliates see Phylum Ciliophora Doflein, 1901 Order Karyorelictida see Class Karyorelictea Corliss, 1974