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 | Ochrophyta | |
| Class | Coscinodiscophyceae | |
| Order | Thalassiosirales | |
| Family | Stephanodiscaceae | |
| Genus | Stephanodiscus |
List of Individual Species - see Taxon profile using the name of the taxa.
| Stephanodiscus astraea | (Ehrenberg) Grunow in Cleve et Grunow 1880 | ||
| Stephanodiscus astraea var. intermedia | Fricke 1901 in A. Schmidt et al. 1874-1959 | ||
| Stephanodiscus dubius | (Fricke) Hustedt | ||
| Stephanodiscus hantzschii | (Grunow) in Cleve et Grunow 1880 emend. HÕkansson | ||
| Stephanodiscus punctatus | Grunow 1878 | Synonym |