†subfamily Fragilarioideae (diatom)
Bacillariophyceae - Fragilariales - Fragilariaceae
Parent taxon: Fragilariaceae according to G. Andrews 1976
Sister taxa: Asterionella, Ceratoneis, Creania, Diatoma, Fragilaria, Meridion, Neosynedra, Opephora, Podocystis, Raphoneis, Synedra, Synedropsis, Tabellarioideae
Subtaxa: none
Ecology: "photoautotroph"
Distribution: there are no occurrences of Fragilarioideae in the database