Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Hemiaulus peripterus Fenner (1984)
Lepidodiscus elegans Witt (1886)
Rocella vigilans Fenner (1984)
Mastogloia sagitta-cupidinis Brun (1896)
Cylindrospira simsiae Mitlehner (1995)
Pyxilla oligocaenica Jousé (1955)