†subfamily Cocconeoideae (diatom)
Bacillariophyceae - Achnanthales - Achnanthaceae
Parent taxon: Achnanthaceae according to G. Andrews 1976
Sister taxa: Achnanthes, Anorthoneis
Subtaxa: none
Ecology: "photoautotroph"
Distribution: there are no occurrences of Cocconeoideae in the database