Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Aulacodiscus excavatus Schmidt (1876)
Raphidodiscus marylandicus Christian (1887)
Triceratium secedens Schmidt (1888)
Pyrgupyxis gracilis (Tempère & Forti) Hendey (1969)
Kittonia elaborata (Grove & Sturt) Grove & Sturt (1887)
Trinacria simulacrum Grove & Sturt (1887)