Related how?

Biota (Life)
Eukaryote (Eukarya)
Chromista
Bacillariophyta
Coscinodiscophyceae (Centricae)
Biddulphiales
Biddulphiaceae
Biddulphia
Biddulphia rhombus

Biddulphia rhombus var. trigona (67880593)