Calpionella is an extinct genus of calpionellid, a group of single celled eukaryotes.
[1] Their fossils are found in rocks of Upper Jurassic to Lower Cretaceous age.
[2] The name is derived from the Greek "κάλπις", meaning "water jug".
The first occurrence of the species Calpionella alpina marks the beginning of the Berriasian and thus Cretaceous.
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