• 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 cf. oligotraphenta Amphora veneta var. capitata 10
Amphora copulata Amphora libyca, Amphora ovalis var. libyca 112
Amphora veneta 113