Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Rattrayella antiqua Hajós & Stradner (1975)
Kreagra forfex Gersonde & Harwood (1990)
Rylandsia biradiata Greville (1861)
Pyrgupyxis gracilis (Tempère & Forti) Hendey (1969)
Sphynctolethus pacificus (Hajós) Sims (1986)
Rossiella symmetrica Fenner (1984)