Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Arachnoidiscus clarus Brown (1933)
Glorioptychus callidus Hanna (1927)
Auliscus johnsonianus Greville (1863)
Xanthioisthmus panduraeformis (Pantocsek) Suto (2006)
Sphynctolethus pacificus (Hajós) Sims (1986)
Vallodiscus lanceolatus Suto (2005)