Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Rutilaria elliptica Greville (1863)
Craspedodiscus ellipticus Gombos (1982)
Hemiaulus oreshkinae Witkowski (2022)
Hemiaulus imperator Witkowski (2022)
Medlinia deciusii (Hanna) Nikolaev & Kociolek in Nikolaev et al. (2001)
Hemiaulus peripterus Fenner (1984)