Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Gladius antiquus Forti & Schulz (1932)
Lepidodiscus elegans Witt (1886)
Hemiaulus oreshkinae Witkowski (2022)
Mastogloia sagitta-cupidinis Brun (1896)
Archaegoniothecium langebertalotii Witkowski, Harwood & Kulikovskiy (2012)
Medlinia duplicata (Schmidt) Sims (1998)