Taxonomia

• Lineage:
• Root
/
• Chromista
/
• Ochrophyta
/
• Coscinodiscophyceae
/
• Biddulphiales
/
• Biddulphiaceae
/
• Trigonium
/
• Trigonium arcticum

Trigonium arcticum (species)

• formQuadratum
• varietySexangulatum
• formTetragonum