Achnanthes Bory 

 Cocconeis Ehrenberg 



Navicula Bory 

 Trachyneis Cleve 



Tropidoneis Cleve 



Gomphonema Agardh 



Cymbella Agardh 



Epit hernia Brebisson 



Nitzschia Hassall 



Baeillaria Gmelin 



Surirella Turpin 



Campy Iodise us Ehrenberg 



CLASSIFICATION 



Suborder MONORAPHIDINEAE 



Family ACHNANTHACEAE 

 Subfamily ACHNANTHOIDEAE 



Subfamily COCCONEIOIDEAE 



Suborder BIRAPHIDINEAE 



Family NAVICULACEAE 



Subfamily NAVICULOIDEAE 



Pleurosigma Wm Smith 

 Scoresbya Hendey 



Subfamily AMPHIPROROIDEAE 



Amphiprora Ehrenberg 



Family GOMPHONEMACEAE 

 Subfamily GOMPHONEMOIDEAE 



Family CYMBELLACEAE 



Subfamily CYMBELLOIDEAE 



Amphora Ehrenberg 



Family EPITHEMIACEAE 

 Subfamily EPITHEMIOIDEAE 



Family BACILLARIACEAE 



Subfamily NITZSCHIOIDEAE 

 Chuniella Karsten 



Subfamily BACILLARIOIDEAE 



Suborder SURIRELLINEAE 



Family SURIRELLACEAE 

 Subfamily SURIRELLOIDEAE 



Subfamily CAMPYLODISCOIDEAE 



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