Biddulphia
172 Biddulphia aurita var. obtusa
- Other galleries:
- Actinocyclus
- Actinodictyon
- Actinodiscus
- Actinoptychus
- Amphora
- Anaulus
- Anthodiscina
- Antinodiscus
- Arachnoidiscus
- Asterolampra
- Aulacodiscus
- Auliscus
- Azpeitia
- Baxteriopsis
- Biddulphia
- Briggera
- Brightwellia
- Camplyoneis
- Cerataulus
- Chaetoceros
- Chasea
- Clavicula
- Cocconeis
- Coscinodiscus
- Craspedodiscus
- Craspedoporus
- Cyclostephanus
- Cyclotella
- Cymatosira
- Dictyoneis
- Diploneis
- Ditylum
- Dossetia
- Drepanotheca
- Endictya
- Entophyla
- Epithelion
- Eunotia
- Euntogramma
- Eupodiscus
- Glyphodesmis
- Glyomesmis
- Glyphodiscus
- Goniothecium
- Grammatophora
- Grovea
- Gyrodiscus
- Helmintopsidella
- Hemiaulus
- Herotheca
- Hyalodiscus
