Order: Pennales
De pennate diatomåene har avnlange skall. På bildet ser du en liten koloni av slike celler.
Systematics :
| Kingdom | Det gule riket (Chromista) | |||||
| Phylum | Diatoms (Bacillariophyta) | |||||
| Klasse | Kiselalger (Bacillariophyceae) | |||||
| Order | Pennales | |||||
| Genus | Amphiprora | |||||
| Genus | Amphora | |||||
| Species | Amphora coffeaeformis | |||||
| Suborder | Araphidinae | |||||
| Genus | Fragilaria | |||||
| Genus | Meridion | |||||
| Genus | Synedra | |||||
| Genus | Tabellaria | |||||
| Genus | Asterionella | |||||
| Species | Asterionella formosa | |||||
| Suborder | Biraphidineae | |||||
| Family | Naviculaceae | |||||
| Family | Nitzschiaceae | |||||
| Family | Surirellaceae | |||||
| Genus | Diatoma | |||||
| Suborder | Raphidoidineae | |||||
| Family | Eunotiaceae | |||||
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