Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Arachnoidiscus clarus Brown (1933)
Symbolophora amblyoceros (Ehrenberg) Hasle & Sims (1986)
Truania archangelskiana Pantocsek (1886)
Asterolampra insignis Schmidt (1888)
Grovea pedalis (Grove & Sturt) Schmidt (1890)
Asterolampra vulgaris Greville (1862)