Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Arachnoidiscus clarus Brown (1933)
Eupodiscus radiatus Bailey (1851)
Sextiputeus inornatus Ross & Sims (2000)
Rutilaria areolata Sheshukova-Poretskaya in Sheshukova-Poretskaya & Gleser (1964) (1964)
Triceratium crenulatum Grove & Sturt (1887)
Rossiella symmetrica Fenner (1984)