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 [].
Back to List of kingdoms
| Kingdom | Animalia | |
| Phylum | Echinodermata | |
| Class | Echinoidea | |
| Order | Cassiduloida | |
| Family | Euchinoidea |
Genus list (full drilldown to species)
| Abatus | [1] | |
| Hemiaster | [1] | |
| Pourtalesia | [2] |