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 | Echinodermata | |
| Class | Echinoidea | |
| Order | Cassiduloida | |
| Family | Euchinoidea | |
| Genus | Abatus |
List of Individual Species - see Taxon profile using the name of the taxa.
| Abatus cordatus | (Verrill, 1876) |