Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Kreagra forfex Gersonde & Harwood (1990)
Medlinia pseudoweissei Sims (1998) (1998)
Rattrayella antiqua Hajós & Stradner (1975)
Trinacria regina Heiberg (1863)
Hemiaulus kondai Hajós (1975)
Trinacria anissimovii Jousé (1949)