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| Biddulphia alternans var. tenuipunctata Mereschkowsky 1901 |
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| Biddulphia arctica var. tetragona (Grunow) Mereschkowsky 1901 |
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| Biddulphia laevis var. minor Mereschkowsky 1901 |
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| Biddulphia montereyi (Brightwell) Mereschkowsky 1901 |
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| Biddulphia sanpedroana Mereschkowsky 1901 |
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| Biddulphia simplex Mereschkowsky 1901 |
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| Chaetoceros incurvus var. angusta Mereschkowsky 1901 |
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| Chaetoceros lyra Mereschkowsky 1901 |
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| Climacosphenia pacifica Mereschkowsky 1901 |
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| Coscinodiscus nitidulus var. radiata Mereschkowsky 1901 |
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| Coscinodiscus nitidus var. radiata Mereschkowsky 1901 |
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| Fragilaria coccochroma Mereschkowsky 1901 |
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| Fragilaria spicula Mereschkowsky 1901 |
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| Grammatophora costata Mereschkowsky 1901 |
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| Licmophora dubia var. latior Mereschkowsky 1901 |
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| Licmophora flabellata var. parva Mereschkowsky 1901 |
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| Licmophora lata Mereschkowsky 1901 |
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| Licmophora monksiae (monksii) Mereschkowsky 1901 |
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| Licmophora montereyana Mereschkowsky 1901 |
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| Licmophora pacifica Mereschkowsky 1901 |
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| Licmophora remuloides Mereschkowsky 1901 |
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| Licmophora thumii Mereschkowsky 1901 |
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| Navicula directa var. heterostriata Mereschkowsky 1901 |
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| Navicula reticulata Mereschkowsky 1901 |
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| Navicula rhaphoneis (Ehrenberg) Ralfs 1901 |
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| Nitzschia incolor Mereschkowsky 1901 |
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| Nitzschia spiralis Mereschkowsky 1901 |
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| Nitzschiella biplacata var. pacifica Mereschkowsky 1901 |
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| Nitzschiella californica Mereschkowsky 1901 |
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| Nitzschiella gracilis Mereschkowsky 1901 |
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| Nitzschiella gracilis var. reversa Mereschkowsky 1901 |
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| Nitzschiella lorensiana var. incurva (Grunow in Cleve & Grunow) Mereschkowsky 1901 |
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| Nitzschiella tenuirostris Mereschkowsky 1901 |
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| Nitzschiella tenuirostris f. directa Mereschkowsky 1901 |
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| Nitzschiella tenuirostris var. hamulifera Mereschkowsky 1901 |
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| Nitzschiella tenuirostris var. hamulifera Mereschkowsky 1901 |
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| Nitzschiella tenuirostris f. minutissima Mereschkowsky 1901 |
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| Nitzschiella tenuirostris var. parva Mereschkowsky 1901 |
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| Podosira fusca Mereschkowsky 1901 |
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| Rhabdonema gibbosum C. Mereschkowsky 1901 |
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| Rhabdonema lineare Mereschkowsky 1901 |
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