At any stage, you can move up or down the Taxonomic hierachy of Antarctic/subantarctic species by clicking on any name. Lower level taxon counts are shown in [].
Back to List of kingdoms
| Kingdom | Protozoa | |
| Phylum | Ciliophora | |
| Class | Oligohymenophorea | |
| Order | Philasterida | |
| Family | Cohnilembidae | |
| Genus | Porpostoma |
List of Individual Species - see Taxon profile using the name of the taxa.
| Porpostoma grassei nov. comb. | (Corliss & Snyder, 1986) |