Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Pyxilla oligocaenica Jousé (1955)
Entogonia davyana (Greville) Greville (1863)
Solium exsculptum Heiberg (1863)
Solium exsculptum Heiberg (1863)
Triceratium pulvinar Schmidt (1888)
Pyrgupyxis gracilis (Tempère & Forti) Hendey (1969)