(Planktoniella) (Planktoniella) is a biological genus in the family Thalassiosiraceae and order Thalassiosirales.
Planktoniella florea
Planktoniella formosa
Planktoniella sol
Bacterosira
Coscinosira
Microsiphona
Minidiscus
Planktoniella
Porosira
Roundia
Shionodiscus
Spicaticribra
Stephanocyclus
Takanoa
Thalassiocyclus
Thalassiosira
Tryblioptychus