| WebNameShort | |
| Actinocyclus dimorphus (Castracane) Harwood & Maruyama 1992 |
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| Actinocyclus fasciculatus Harwood & Maruyama 1992 |
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| Actinocyclus ingens var. irregularis (Van Heurck) Harwood & Maruyama 1992 |
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| Actinocyclus maccollumii Harwood & Maruyama 1992 |
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| Asteromphalus concavus Harwood & Maruyama 1992 |
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| Azpeitia gombosii Harwood & Maruyama 1992 |
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| Coscinodiscus lewisianus var. levis (Jouse) Harwood & Maruyama 1992 |
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| Denticulopsis hustedtii var. aspera Maruyama in Harwood & Maruyama 1992 |
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| Denticulopsis hustedtii var. aspera T. Maruyama in D.M. Harwood & T. Maruyama 1992 |
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| Denticulopsis meridionalis Maruyama in Harwood & Maruyama 1992 |
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| Hemidiscus ovalis (Gersonde) Harwood & Maruyama 1992 |
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| Hemidiscus triangularis (Jousé) Harwood & Maruyama 1992 |
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| Navicula wisei Harwood & Maruyama 1992 |
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| Nitzschia auricula R. Gersonde in Harwood & Maruyama 1992 |
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| Thalassiosira fasciculata Harwood & Maruyama 1992 |
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| Thalassiosira insigna (Jousé) Harwood & Maruyama 1992 |
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| Thalassiosira oliverana var. sparsa Harwood & Maruyama 1992 |
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| Thalassiosira planiuscula (‘planisculus’) (Rattray) D.M. Harwood & T. Maruyama 1992 |
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| Thalassiosira striata Harwood & Maruyama 1992 |
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| Thalassiosira webbi Harwood & Maruyama 1992 |
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