Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Medlinia deciusii (Hanna) Nikolaev & Kociolek in Nikolaev et al. (2001)
Auliscus johnsonianus Greville (1863)
Xanthioisthmus panduraeformis (Pantocsek) Suto (2006)
Sceptroneis praecaducea Hajós & Stradner (1975)
Psammodiscus praenitidus (Fenner in Schrader & Fenner) Witkowski (2022)
Strangulonema barbadense Greville (1865)