Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Brightwellia coronata (Brightwell) Ralfs in Pritchard (1861)
Hemiaulus asymmetricus Jousé (1951)
Gladiopsis speciosa (Schulz) Gersonde & Harwood (1990)
Rocella vigilans Fenner (1984)
Glyphodiscus strigillatus Schmidt (1890)
Hemiaulus imperator Witkowski (2022)