Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Craspedodiscus ellipticus Gombos (1982)
Medlinia abyssora (Grunow) Sims (1998)
Liradiscus bipolaris Lohman (1984)
Eupodiscus radiatus Bailey (1851)
Psammodiscus praenitidus (Fenner in Schrader & Fenner) Witkowski (2022)
Goniothecium decoratum Brun (1891)