Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Psammodiscus praenitidus (Fenner in Schrader & Fenner) Witkowski (2022)
Pyrgupyxis eocena Hendey (1969)
Rattrayella obovata Sims (2006)
Liradiscus ovalis Greville (1865)
Rylandsia biradiata Greville (1861)
Gladius antiquus Forti & Schulz (1932)