Calpionellidae

Calpionellidae; Temporal range: Upper Jurassic to Lower Cretaceous Tithonian–Valanginian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
(unranked):	SAR
(unranked):	Alveolata
Family:	Calpionellidae; Bonet, 1956

Calpionellidae are an extinct family of eukaryotic single celled organisms of uncertain affinities. Their fossils are found in rocks of Upper Jurassic to Lower Cretaceous age.[1] They were urn-shaped, planktic organisms with calcitic tests that had a widespread distribution across the Tethys from the late Tithonian to the early Valanginian and were characterised by rapid evolution, and their abundant remains in deep sea sediments from this interval are important as they allow long distance biostratigraphic correlation and precise dating.[2]

Naming

The name is derived from the Greek "κάλπις", meaning "water jug".

References

Bolli, Hans M.; Saunders, John B.; Fancett, Katharina Perch-Nielsen, eds. (1989). Plankton stratigraphy (1st paperback ed.). Cambridge [Cambridgeshire]: Cambridge University Press. ISBN 978-0521367196.
Jain, Sreepat (2020). "Calpionellids". Fundamentals of Invertebrate Palaeontology: Microfossils. Springer Geology. New Delhi: Springer India. doi:10.1007/978-81-322-3962-8. ISBN 978-81-322-3960-4.

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[Bolli_1989-1] Bolli, Hans M.; Saunders, John B.; Fancett, Katharina Perch-Nielsen, eds. (1989). Plankton stratigraphy (1st paperback ed.). Cambridge [Cambridgeshire]: Cambridge University Press. ISBN 978-0521367196.

[2] Jain, Sreepat (2020). "Calpionellids". Fundamentals of Invertebrate Palaeontology: Microfossils. Springer Geology. New Delhi: Springer India. doi:10.1007/978-81-322-3962-8. ISBN 978-81-322-3960-4.