Syringammina
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Syringammina is a xenophyophore found off the coast of Scotland, near Rockall. It is one of the largest single-celled organisms known, at up to 20 centimetres across. Wikipedia
Scientific name: Syringammina
Rank: Species
Domain: Eukaryota
Class: Monothalamea
Family: Syringamminidae
Genus: Syringammina; Brady, 1883
Order: Psamminida