Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Anuloplicata ornata (Grunow) Gleser in Gleser et al. (1992)
Arachnoidiscus clarus Brown (1933)
Archaegoniothecium langebertalotii Witkowski, Harwood & Kulikovskiy (2012)
Asterolampra insignis Schmidt (1888)
Actinoptychus simbirskianus Schmidt (1875)
Actinoptychus intermedius Schmidt (1896)