eukaryotes see Domain Eukaryota Chatton, 1925 Centroheliozoa Dürrschmidt & Patterson, 1987 see Class Centrohelea Kühn, 1926 Family Heterophryidae Poche, 1913 1 Genus Cienkowskya Schaudinn, 1896 2 Genus Oxnerella Dobell, 1917 3 Genus Sphaerastrum Greeff, 1873 4 Genus Heterophrys Archer, 1869