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 | Animalia | |
| Phylum | Nemata | |
| Class | Secernentea | |
| Order | Ascaridida | |
| Family | Oxyuridae |
List of all species - see Taxon profile using the number
| Genus Passalurus | ||||
| Passalurus ambiguus | (Rudolphi, 1819) | Unsegmented roundworm or | ||