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
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:
Additionally, several other molecular types have been discovered that do not match any of the described species and thus possibly represent new taxa.[3]
^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.
ISSN0096-1191.
^
abHayward, 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.
ISSN0377-8398.
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
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:
Additionally, several other molecular types have been discovered that do not match any of the described species and thus possibly represent new taxa.[3]
^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.
ISSN0096-1191.
^
abHayward, 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.
ISSN0377-8398.