- Valve is organized around a line (bilateral symmetry)
- Valves usually symmetrical to both apical and transapical axes
- Raphid system well developed, and positioned near the valve margin
- Raphe is enclosed within a canal and raised onto a keel
Note: The specimen(s) pictured to the right are not from Antarctica, excepting Naviculoid example.
| Taxon Name | Basionym | synonyms | ID |
|---|---|---|---|
| Denticula sundayensis | 128 | ||
| Hantzschia abundans | 30 | ||
| Hantzschia amphioxys | Eunotia amphioxys | 29 | |
| Hantzschia amphioxys | 169 | ||
| Hantzschia amphioxys f. muelleri | Hantzschia amphioxys f. capitata | 33 | |
| Hantzschia hyperaustralis | Hantzschia amphioxs var. ruperstris f. capitellata | Hantzschia subrupestris (p) | 32 |
| Hantzschia possessionensis | 287 | ||
| Nitzschia acidoclinata | 194 | ||
| Nitzschia aff. tubicola | 212 | ||
| Nitzschia angustatula | 195 | ||
| Nitzschia archibaldii | 196 | ||
| Nitzschia australocommutata | 66 | ||
| Nitzschia chardezii | 197 | ||
| Nitzschia clausii | 198 | ||
| Nitzschia communis | 199 | ||
| Nitzschia debilis | 200 | ||
| Nitzschia dissipata var. media | 201 | ||
| Nitzschia fonticola | 202 | ||
| Nitzschia frustulum var. frustulum | 203 | ||
| Nitzschia gracilis | 204 | ||
| Nitzschia hungarica | 205 | ||
| Nitzschia inconspicua | 206 | ||
| Nitzschia liebetruthii var. liebetruthii | 207 | ||
| Nitzschia palea | 208 | ||
| Nitzschia palustris | 209 | ||
| Nitzschia pusilla | 210 | ||
| Nitzschia sp.#1 | 211 | ||
| Nitzschia westiorum | Fragilaria tenuicollis var. antarctica | Nitzschia westii (p) | 70 |
