| WebNameShort | |
| Chaetoceros scriptus Frenguelli 1949 |
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| Chaetoceros surirella Frenguelli 1949 |
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| Chaetoceros tiltilensis Frenguelli 1949 |
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| Cocconeis dirupta var. chilensis Frenguelli 1949 |
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| Cocconeis dirupta var. triumphis (Hanna & Grant) Frenguelli 1949 |
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| Detonia superba (Janisch) Frenguelli 1949 |
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| Dimeregramma (Dimerogramma) maculatum (Cleve) Frenguelli 1949 |
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| Dimeregramma (Dimerogramma) tiltilense Frenguelli 1949 |
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| Dimeregramma (Dimerogramma) tiltilense var. biconstricta Frenguelli 1949 |
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| Diploneis adonis var. tiltilensis Frenguelli 1949 |
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| Grammatophora mejillonis Frenguelli 1949 |
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| Grammatophora tiltilensis Frenguelli 1949 |
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| Hemidiscus rotundus f. simplicissima (Hanna & Grant) Frenguelli 1949 |
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| Nitzschia baculum Frenguelli 1949 |
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| Nitzschia porteri Frenguelli 1949 |
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| Nitzschia tiltilensis Frenguelli 1949 |
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| Opephoropsis tiltilensis Frenguelli 1949 |
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| Plagiogramma robustum (Brun in Brun & Tempère) Frenguelli 1949 |
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| Pleurosigma affine var. temperei Frenguelli 1949 |
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| Pseudonitzschia fossilis Frenguelli 1949 |
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