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 | Chromista | |
| Phylum | Heterokontophyta | |
| Class | Xanthophyceae | |
| Order | Tribonematales | |
| Family | Tribonemataceae | |
| Genus | Heterothrix |
List of Individual Species - see Taxon profile using the name of the taxa.
| Heterothrix antarctica | Broady 1976 | ||
| Heterothrix bristoliana | Pascher 1932 | Synonym | |
| Heterothrix debilis | Vischer 1936 | Synonym | |
| Heterothrix exilis | (Klebs) Pascher 1932 | Synonym | |
| Heterothrix sp. | |||
| Heterothrix stichococcoides | Pascher 1939 | Synonym |