Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Actinoptychus marylandicus Andrews (1976)
Pyrgupyxis gracilis (Tempère & Forti) Hendey (1969)
Riedelia tenuicornis (Greville) Schrader & Fenner (1976)
Triceratium trisulcum Schmidt (1886)
Arachnoidiscus clarus Brown (1933)
Entogoniopsis polycistinora (Pantocsek ex Tempère) Strelnikova, Sims, Witkowski & Williams (2015)