Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Mastogloia sagitta-cupidinis Brun (1896)
Cortinocornus rossicus (Pantocsek) Gleser (1984)
Pyrgupyxis gracilis (Tempère & Forti) Hendey (1969)
Trinacria excavata Heiberg (1863)
Pseudotriceratium chenevieri (Meister) Gleser (1974)
Liradiscus ovalis Greville (1865)