Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Trilamina tripes (Brun) Witkowski, Sims, Strelnikova & Williams (2015)
Anuloplicata ornata (Grunow) Gleser in Gleser et al. (1992)
Actinoptychus wittianus Truan y Luard & Witt (1888)
Actinoptychus intermedius Schmidt (1896)
Archaegoniothecium langebertalotii Witkowski, Harwood & Kulikovskiy (2012)
Raphidodiscus marylandicus Christian (1887)