Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Psammodiscus praenitidus (Fenner in Schrader & Fenner) Witkowski (2022)
Pyxilla oligocaenica Jousé (1955)
Stictodiscus kamischevensis Chenevière (1934)
Brightwellia coronata (Brightwell) Ralfs in Pritchard (1861)
Pyrgupyxis eocena Hendey (1969)
Trilamina nitescens (Greville) Witkowski, Sims, Strelnikova & Williams (2015)