Calpionella

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]

Calpionella Temporal range: Late Jurassic-Early Cretaceous ~145.5–136 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
(unranked):	SAR
(unranked):	Alveolata
Family:	Calpionellidae
Genus:	Calpionella Lorenz, 1902
Species
C. alpina Lorenz, 1902 C. elliptica Cadisch, 1932

Etymology

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

Biostratigraphic significance

The first occurrence of the species Calpionella alpina marks the beginning of the Berriasian and thus Cretaceous.

Distribution

Fossils of the genus have been found in:^[1]

Jurassic

• Guasasa Formation, Cuba
• Stramberk Formation, Czech Republic

Cretaceous

• Puke, Albania
• Argiles de Ghriss Formation, Algeria
• Steinmühl Formation, Austria
• Abenaki Formation, Nova Scotia, Canada
• Guasasa Formation, Cuba
• Lake Rożnów, Poland
• Lapos Formation, Romania
• Miravetes and Tollo Formations, Spain