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 | Cnidaria | |
| Class | Hydrozoa | |
| Order | Anthoathecata |
List of all species - see Taxon profile using the number
| Family Calycopsidae | ||||
| Calycopsis borchgrewinki | (Browne, 1910) | |||
| Calycopsis typa | Fewkes, 1882 | |||
| Family Protiaridae | ||||
| ?Halitiara sp. 1 | ||||
| ?Halitiara sp. 2 | ||||
| Family Rathkeidae | ||||
| Rathkea lizzioides | O'Sullivan, 1984 | |||
| Rathkea lizzioides | ||||