Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Arachnoidiscus clarus Brown (1933)
Costopyxis schulzii (Steinecke) Gleser (1984)
Medlinia pseudoweissei Sims (1998) (1998)
Xanthioisthmus panduraeformis (Pantocsek) Suto (2006)
Triceratium trisulcum Schmidt (1886)
Hemiaulus danicus Grunow (1884)