Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Sheshukovia mereskovskii (Pantocsek) Gleser (1984)
Archaegoniothecium langebertalotii Witkowski, Harwood & Kulikovskiy (2012)
Costopyxis schulzii (Steinecke) Gleser (1984)
Fenneria kanayae (Fenner) Witkowski (2018)
Fenneria kanayae (Fenner) Witkowski (2018)
Craspedodiscus elegans Ehrenberg (1844)