Eukaryota  >  Bacillariophyta  >  Fragilariophyceae

Family	Genus	Species
Cyclophoraceae	7	15
Fragilariaceae	16	189
Grammatophoraceae	4	14
Licmophoraceae	4	27
Protoraphidaceae	1	1
Rhabdonemataceae	2	8
Staurosiraceae	13	63
Tabellariaceae	7	22
Thalassionemataceae	8	47