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 [].
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| Kingdom | Protozoa | |
| Phylum | Ciliophora | |
| Class | Oligohymenophorea | |
| Order | Sessilida | |
| Family | Vorticellidae |
List of all species - see Taxon profile using the number
| Genus Haplocaulus | ||||
| Haplocaulus terrenus | Foissner, 1981 | |||