Orbitolina
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Orbitolina is an extinct genus of foraminifera belonging to the order Textulariida and family Orbitolinidae. Fossils of this genus are widely found in beds deposited in the Tethys Ocean ranging from Aptian (early Cretaceous) to Cenomanian (early Late Cretaceous) in age. It has been used as a shallow carbonate platform facies marker and as a Cretaceous index fossil.
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Within Vinony's link graph, Orbitolina is referenced by 11 other articles, and connects out to year, eukaryote and Wikidata.
It is catalogued under topics including Fossil Foraminifera genera and Globothalamea.
Its subject is documented across 6 Wikipedia language editions.
Wikidata facts
- Image
- Orbitolina sp.1 - Cretacico.JPG
Show 5 more facts
- taxon name
- Orbitolina
- taxon rank
- genus
- Commons category
- Orbitolina
- temporal range start
- Albian
- temporal range end
- Cenomanian
Sources (2)
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Encyclopedic overview
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- References
Orbitolina is an extinct genus of foraminifera belonging to the order Textulariida and family Orbitolinidae. Fossils of this genus are widely found in beds deposited in the Tethys Ocean ranging from Aptian (early Cretaceous) to Cenomanian (early Late Cretaceous) in age. It has been used as a shallow carbonate platform facies marker and as a Cretaceous index fossil.
The test of the organism has the shape of a cone, with the proloculus (initial chamber) at the apex of the cone and increasingly large cuplike chambers forming the remainder of the test. Each chamber is further subdivided by numerous partitions.
Excerpted from Wikipedia’s “Orbitolina” article, available under the CC BY-SA 4.0 licence.