Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Trinacria excavata Heiberg (1863)
Stictodiscus kamischevensis Chenevière (1934)
Grunowiella gemmata (Grunow) Van Heurck (1896)
Hemiaulus crenatus Greville (1865)
Fenneria kanayae (Fenner) Witkowski (2018)
Stictodiscus kamischevensis Chenevière (1934)