Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Hemiaulus peripterus Fenner (1984)
Craspedodiscus ellipticus Gombos (1982)
Navicula decora Grove & Sturt (1887)
Lepidodiscus elegans Witt (1886)
Corethron penicillus (Grunow) Fenner (1994)
Sceptroneis praecaducea Hajós & Stradner (1975)