Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Triceratium blanditum Greville (1861)
Fenneria kanayae (Fenner) Witkowski (2018)
Auliscus diffusus (Rattray) Van Landingham (1967)
Entogoniopsis morlandii (Grove & Sturt) Witkowski, Sims, Strelnikova & Williams (2015)
Archaegoniothecium langebertalotii Witkowski, Harwood & Kulikovskiy (2012)
Sphynctolethus pacificus (Hajós) Sims (1986)