Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Pyrgupyxis gracilis (Tempère & Forti) Hendey (1969)
Hemiaulus imperator Witkowski (2022)
Medlinia duplicata (Schmidt) Sims (1998)
Stictodiscus kamischevensis Chenevière (1934)
Liradiscus ovalis Greville (1865)
Pyrgupyxis gracilis (Tempère & Forti) Hendey (1969)