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 | Arthropoda | |
| Class | Maxillopoda | |
| Order | Calanoida | |
| Family | Aetideidae | |
| Genus | Gaidius |
List of Individual Species - see Taxon profile using the name of the taxa.
| Gaidius intermedius | Wolfenden, 1905 | Synonym | |
| Gaidius tenuispinus | (G. O. Sars, 1900) | Synonym |