Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Liradiscus ovalis Greville (1865)
Mastogloia sagitta-cupidinis Brun (1896)
Mastogloia sagitta-cupidinis Brun (1896)
Gladius antiquus Forti & Schulz (1932)
Hemiaulus incurvus Schibkova in Krotov & Schibkova (1959)
Archaegoniothecium langebertalotii Witkowski, Harwood & Kulikovskiy (2012)