| WebNameShort | |
| Cocconeis triumphis Hanna & Grant 1926 |
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| Coscinodiscus evermanni Hanna & Grant 1926 |
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| Coscinodiscus hertleinii Hanna & Grant 1926 |
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| Coscinodiscus masonii Hanna & Grant 1926 |
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| Dicladia pylea Hanna & Grant 1926 |
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| Endictya robustus (Greville) Hanna & Grant 1926 |
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| Glyphodesmis driveri Hanna & Grant 1926 |
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| Glyphodesmis sigmoideus Hanna & Grant 1926 |
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| Grammatophora merletta Hanna & Grant 1926 |
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| Hemidiscus niveus Hanna & Grant 1926 |
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| Hemidiscus simplicissimus Hanna & Grant 1926 |
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| Navicula densistriata (densestriata) (Schmidt in Schmidt et al.) Hanna & Grant 1926 |
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| Navicula eastwoodi Hanna & Grant 1926 |
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| Navicula madrae Hanna & Grant 1926 |
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| Navicula ortolanae Hanna & Grant 1926 |
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| Navicula regata Hanna & Grant 1926 |
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| Navicula stippi Hanna & Grant 1926 |
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| Navicula subspectablis Hanna & Grant 1926 |
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| Nitzschia hondoensis Hanna & Grant 1926 |
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| Nitzschia nelsoni Hanna & Grant 1926 |
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