Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Eupodiscus radiatus Bailey (1851)
Mastogloia sagitta-cupidinis Brun (1896)
Gladius antiquus Forti & Schulz (1932)
Corethron penicillus (Grunow) Fenner (1994)
Medlinia duplicata (Schmidt) Sims (1998)
Ktenodiscus evermanni Hanna (1927)