Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Psammodiscus praenitidus (Fenner in Schrader & Fenner) Witkowski (2022)
Brightwellia coronata (Brightwell) Ralfs in Pritchard (1861)
Rocella vigilans Fenner (1984)
Trinacria pileolus (Ehrenberg) Grunow (1884)
Trinacria regina Heiberg (1863)
Pyrgupyxis eocena Hendey (1969)