Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Craspedodiscus coscinodiscus (Ehrenberg) Ehrenberg (1844)
Asterolampra insignis Schmidt (1888)
Entogoniopsis polycistinora (Pantocsek ex Tempère) Strelnikova, Sims, Witkowski & Williams (2015)
Pyrgupyxis gracilis (Tempère & Forti) Hendey (1969)
Medlinia simbirskiana (Witt) Sims (1998)
Rylandsia biradiata Greville (1861)