Eukaryota  >  Bacillariophyta  >  Fragilariophyceae

Order	Family	Genus	Species
Cyclophorales	2	8	16
Fragilariales	1	16	209
Licmophorales	1	4	27
Rhabdonematales	2	6	24
Staurosirales	1	13	63
Tabellariales	1	7	23
Thalassionematales	1	8	47