• Valve is organized around a line (bilateral symmetry)
  • Valves symmetrical to transapical axis, asymmetrical to apical axis
  • Raphid system positioned eccentrically, near the valve margin
  • Primarily a marine genus, with a few freshwater representatives

Note: The specimen(s) pictured to the right are not from Antarctica, excepting Naviculoid example.

Taxon Name Basionym synonyms ID
Amphora oligotraphenta Amphora veneta var. capitata 10