Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Arachnoidiscus clarus Brown (1933)
Costopyxis antiqua Gleser (1984)
Xanthioisthmus panduraeformis (Pantocsek) Suto (2006)
Triceratium trisulcum Schmidt (1886)
Liradiscus bipolaris Lohman (1984)
Entogoniopsis polycistinora (Pantocsek ex Tempère) Strelnikova, Sims, Witkowski & Williams (2015)