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 | Bacillariophyta | |
| Class | Bacillariophyceae | |
| Order | Acnanthales | |
| Family | Achnanthidiaceae |
List of all species - see Taxon profile using the number
| Genus Achnanthidium | ||||
| Achnanthidium lanceolatum | BrÚbisson ex Kitzing 1849 | Synonym | ||
| Achnanthidium lanceolatum f. tipica | Mayer 1916 | Synonym | ||
| Achnanthidium microcephalum | Kitzing 1844 | Synonym | ||
| Genus Psammothidium | ||||
| Psammothidium abundans | (Manguin) Bukhtiyarova et Round 1996 | |||
| Psammothidium chlidanos | (Hohn et Hellerman) Lange-Bertalot in Lange-Bertal | |||
| Psammothidium marginatulum | (Grunow) Bukhtiyarova et Round 1996 | |||