- Bacillariophyta
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- Bacillariophyceae
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- Cymbellales
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- Cymbellaceae
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- Didymosphenia
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- Didymosphenia clavaherculis
- Didymosphenia clavamagna
- Didymosphenia coronata
- Didymosphenia crassiporata
- Didymosphenia curvata
- Didymosphenia curvirostrum
- Didymosphenia dentata
- Didymosphenia dorogostaiskii
- Didymosphenia fossilis
- Didymosphenia geminata
- Didymosphenia geminatum
- Didymosphenia grunowii
- Didymosphenia hullii
- Didymosphenia laticeps
- Didymosphenia laticollis
- Didymosphenia lineata
- Didymosphenia mongolica
- Didymosphenia nipponica
- Didymosphenia pumila
- Didymosphenia siberica
- Didymosphenia skvortzowii
- Didymosphenia strelnikovae
- Didymosphenia subcapitata
- Didymosphenia tatrensis
