Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Craspedodiscus ellipticus Gombos (1982)
Brightwellia coronata (Brightwell) Ralfs in Pritchard (1861)
Pyrgupyxis eocena Hendey (1969)
Hemiaulus kondai Hajós (1975)
Nikolaevia symbolica Harwood & Witkowski (2010)
Peponia barbadensis Greville (1863)