Calpionellids are an extinct group of eukaryotic single celled organisms of uncertain affinities. Their fossils are found in marine rocks of Upper Jurassic to Lower Cretaceous age. They were planktic organisms with urn-shaped, calcitic tests that had a widespread distribution across the Tethys Ocean 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. Calpionellids were not confined to the Tethys, as they have also been found in the Vaca Muerta of northern Patagonia, in what was then the southeastern Pacific. Calpionellids are divided into two main families, the Chitinoidellidae, which are the e
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| - Calpionellen (de)
- Calpionellid (en)
- Calpionelle (fr)
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| - Calpionellen (Calpionelliden (Calpionellida), von griechisch κάλπις „Wasserkrug“) sind eine ausgestorbene Gruppe eukaryotischer Einzeller unbekannter systematischer Stellung aus dem Mesozoikum (Erdmittelalter). Calpionellen waren planktonisch lebende, marine Organismen, die im Tethysbereich während der Zeit um die Wende vom Oberjura zur Unterkreide recht häufig waren. Sie wurden früher häufig zu den Tintinniden, eine Gruppe von Wimpertierchen, gestellt. (de)
- Calpionella Calpionella Calpionelles vues en lame mince (calcaire du Tithonien supérieur du département de l'Ardèche en France). Genre † CalpionellaSepkoski, 2002 Les calpionelles (famille des Calpionellidae ou genre Calpionella) sont un groupe disparu de microfossiles de protozoaires ciliés, ayant vécu de la fin du Jurassique supérieur (Tithonien) jusqu'au début du Crétacé inférieur (Valanginien) il y a environ entre −150 et −136 Ma (millions d'années). (fr)
- Calpionellids are an extinct group of eukaryotic single celled organisms of uncertain affinities. Their fossils are found in marine rocks of Upper Jurassic to Lower Cretaceous age. They were planktic organisms with urn-shaped, calcitic tests that had a widespread distribution across the Tethys Ocean 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. Calpionellids were not confined to the Tethys, as they have also been found in the Vaca Muerta of northern Patagonia, in what was then the southeastern Pacific. Calpionellids are divided into two main families, the Chitinoidellidae, which are the e (en)
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| - Upper Jurassic to Lower Cretaceous (en)
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| - Calpionellids seen in cross section (en)
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| - *Calpionellidae Bonet, 1956
*Chitinoidellidae Trejo,1975
*Semichitinoidellidae Nowak, 1978 (en)
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| - Calpionellids are an extinct group of eukaryotic single celled organisms of uncertain affinities. Their fossils are found in marine rocks of Upper Jurassic to Lower Cretaceous age. They were planktic organisms with urn-shaped, calcitic tests that had a widespread distribution across the Tethys Ocean 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. Calpionellids were not confined to the Tethys, as they have also been found in the Vaca Muerta of northern Patagonia, in what was then the southeastern Pacific. Calpionellids are divided into two main families, the Chitinoidellidae, which are the earliest members of the group, appearing in the mid Tithonian, characterised by microgranular lorica. Calpionellidae appear later, including widespread genera such as Calpionella and Calpionellites, and have combined microgranular and hyaline lorica. A third family, the Semichitinoidellidae are sometimes recognised. (en)
- Calpionellen (Calpionelliden (Calpionellida), von griechisch κάλπις „Wasserkrug“) sind eine ausgestorbene Gruppe eukaryotischer Einzeller unbekannter systematischer Stellung aus dem Mesozoikum (Erdmittelalter). Calpionellen waren planktonisch lebende, marine Organismen, die im Tethysbereich während der Zeit um die Wende vom Oberjura zur Unterkreide recht häufig waren. Sie wurden früher häufig zu den Tintinniden, eine Gruppe von Wimpertierchen, gestellt. (de)
- Calpionella Calpionella Calpionelles vues en lame mince (calcaire du Tithonien supérieur du département de l'Ardèche en France). Genre † CalpionellaSepkoski, 2002 Les calpionelles (famille des Calpionellidae ou genre Calpionella) sont un groupe disparu de microfossiles de protozoaires ciliés, ayant vécu de la fin du Jurassique supérieur (Tithonien) jusqu'au début du Crétacé inférieur (Valanginien) il y a environ entre −150 et −136 Ma (millions d'années). (fr)
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