Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Arachnoidiscus clarus Brown (1933)
Trilamina tripes (Brun) Witkowski, Sims, Strelnikova & Williams (2015)
Triceratium unguiculatum Greville (1864)
Truania archangelskiana Pantocsek (1886)
Asterolampra vulgaris Greville (1862)
Actinoptychus intermedius Schmidt (1896)