Class Bacillariophyceae Haeckel 1878 (diatom)
PaleoDB taxon number: 69587
Parent taxon: Chrysophyta according to J. Shoshani et al. 1989
Sister taxon: Diatomophyceae
Subtaxa: Achnanthes, Aulacodiscaceae, Corinna, Cresswellia, Cymbella, Fragilaria
Ecology: "photoautotroph"