Ammonia (genus)
Ammonia | |
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Ammonia tepida | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Clade: | Diaphoretickes |
Clade: | SAR |
Phylum: | Retaria |
Subphylum: | Foraminifera |
Class: | Globothalamea |
Order: | Rotaliida |
Family: | Ammoniidae |
Subfamily: | Ammoniinae |
Genus: | Ammonia Brünnich, 1772 |
Type species | |
Nautilus beccarii | |
Species[1] | |
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Synonyms[1] | |
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![](http://up.wiki.x.io/wikipedia/commons/thumb/b/b8/Ammonia_beccarii.jpg/220px-Ammonia_beccarii.jpg)
Ammonia is a genus of marine foraminifers. It is one of the most abundant foraminifer genera worldwide and occurs in sheltered and shallow marine intertidal environments, sometimes in brackish waters.[2]
Species
[edit]The classification of the genus Ammonia in species is controversial. While several different forms exist, many authors consider the genus to consist of a single species, Ammonia beccarii, with many ecophenotypes. However, recent molecular studies revealed that the genus consists of many species, although they may be difficult to discriminate based on morphology.[3]
Based on a comparison between molecular results and morphology, the following species appear to be valid:
- Ammonia aberdoveyensis Haynes, 1973
- Ammonia aomoriensis (Asano, 1951)
- Ammonia aoteana (Finlay, 1940)
- Ammonia batava (Hofker, 1951)
- Ammonia beccarii (Linnaeus, 1758)
- Ammonia convexa (Collins, 1958)
- Ammonia irridescens (Arnal, 1958) (maybe a synonym of A. tepida)
- Ammonia limnetes (Todd & Bronnimann, 1957)
- Ammonia sobrina (Shupack, 1934)
- Ammonia tepida (Cushman, 1926)
Additionally, several other molecular types have been discovered that do not match any of the described species and thus possibly represent new taxa.[3]
References
[edit]- ^ a b Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2024). World Foraminifera Database. Ammonia Brünnich, 1771. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=112078 on 16 June 2024
- ^ Walton, W. R.; Sloan, B. J. (1990). "The genus Ammonia Bruennich, 1772; its geographic distribution and morphologic variability". The Journal of Foraminiferal Research. 20 (2): 128–156. Bibcode:1990JForR..20..128W. doi:10.2113/gsjfr.20.2.128. ISSN 0096-1191.
- ^ a b Hayward, Bruce W.; Holzmann, Maria; Grenfell, Hugh R.; Pawlowski, Jan; Triggs, Chris M. (2004). "Morphological distinction of molecular types in Ammonia – towards a taxonomic revision of the world's most commonly misidentified foraminifera". Marine Micropaleontology. 50 (3–4): 237–271. Bibcode:2004MarMP..50..237H. doi:10.1016/S0377-8398(03)00074-4. ISSN 0377-8398.