Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Trinacria regina Heiberg (1863)
Trinacria anissimovii Jousé (1949)
Hemiaulus echinulatus Jousé (1951)
Sheshukovia flos (Ehrenberg) Gleser (1984)
Craspedodiscus ellipticus Gombos (1982)
Corethron penicillus (Grunow) Fenner (1994)