Doodle showing the diatom Plagiogramma Fossil Diatom Atlas
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Rylandsia biradiata Greville (1861)
Trinacria simulacrum Grove & Sturt (1887)
Entogonia davyana (Greville) Greville (1863)
Triceratium trisulcum Schmidt (1886)
Arachnoidiscus clarus Brown (1933)
Psammodiscus praenitidus (Fenner in Schrader & Fenner) Witkowski (2022)