Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Archaegoniothecium langebertalotii Witkowski, Harwood & Kulikovskiy (2012)
Archaegoniothecium langebertalotii Witkowski, Harwood & Kulikovskiy (2012)
Costopyxis schulzii (Steinecke) Gleser (1984)
Medlinia deciusii (Hanna) Nikolaev & Kociolek in Nikolaev et al. (2001)
Corethron penicillus (Grunow) Fenner (1994)
Hemiaulus echinulatus Jousé (1951)