- Valve is organized around a point (radial symmetry)
- Lack significant motility
- Oogamous sexual reproduction
Note: The specimen(s) pictured to the right are not from Antarctica, excepting Naviculoid example.
| Taxon Name | Basionym | synonyms | ID |
|---|---|---|---|
| Melosira charcotii | Melosira charcotii | 86 |
