Biota (Life)
Eukaryote (Eukarya)
Chromista
Harosa
Rhizaria
Foraminifera
Lagenida
Lagenina
Nodosarioidea (Nodosariacea)
Nodosariidae
Frondiculariinae
Children (3 direct children, 3 direct and indirect children):
Tristix carinata
Tristix chathamensis
Tristix permiana