''Falsimargarita'' is a
genus of
sea snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...
s,
marine
Marine is an adjective meaning of or pertaining to the sea or ocean.
Marine or marines may refer to:
Ocean
* Maritime (disambiguation)
* Marine art
* Marine biology
* Marine debris
* Marine habitats
* Marine life
* Marine pollution
Military
* ...
gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusks in the
family Calliostomatidae.
Description
This genus differs from the other genera in the family Calliostomatidae by several characteristics: the conspicuous spiral
whorl
A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs).
Whorls in nature
File:Photograph and axial plane floral ...
s, obvious
sculpture, an open
umbilicus, a thin shell and external
iridescence
Iridescence (also known as goniochromism) is the phenomenon of certain surfaces that appear to gradually change color as the angle of view or the angle of illumination changes. Examples of iridescence include soap bubbles, feathers, butterfl ...
.
Distribution
The species of this cold-water genus occurs in
Antarctic
The Antarctic ( or , American English also or ; commonly ) is a polar region around Earth's South Pole, opposite the Arctic region around the North Pole. The Antarctic comprises the continent of Antarctica, the Kerguelen Plateau and other ...
waters and off the
Magellanic Region of South America.
Species
Species within the genus ''Falsimargarita'' include:
* ''
Falsimargarita atlantoides''
(Quinn, 1992)
* ''
Falsimargarita benthicola''
Dell, 1990
* ''
Falsimargarita callista''
B. A. Marshall, 2016
* ''
Falsimargarita challengerica''
B. A. Marshall, 2016
* ''
Falsimargarita coriolis''
B. A. Marshall, 2016
* ''
Falsimargarita coronata
''Falsimargarita coronata'' is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae
Calliostomatidae is a family of sea snails within the superfamily Trochoidea and the clade Vetigastropoda.Gofas, S. (2013). Calli ...
''
(Quinn, 1992)
* ''
Falsimargarita eximia''
B. A. Marshall, 2016
* ''
Falsimargarita gemma''
(E.A. Smith, 1915)
* ''
Falsimargarita georgiana''
Dell, 1990
* ''
Falsimargarita glaucophaos''
(Barnard, 1963)
* ''
Falsimargarita imperialis''
(Simone & Birman, 2006)
* ''
Falsimargarita iris''
(E.A. Smith, 1915)
* ''
Falsimargarita kapala''
B. A. Marshall, 2016
* ''
Falsimargarita nauduri''
Warén & Bouchet, 2001
* †''
Falsimargarita parvispira
''Falsimargarita parvispira'' is an extinct species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae
Calliostomatidae is a family of sea snails within the superfamily Trochoidea and the clade Vetigastropoda.Gofas, S. (2 ...
''
Quilty, Darragh, Gallagher & Harding, 2016
* ''
Falsimargarita renkeri''
Engl, 2020
* ''
Falsimargarita stephaniae''
Rios & Simone, 2005
* ''
Falsimargarita tangaroa''
B. A. Marshall, 2016
* ''
Falsimargarita terespira''
Simone, 2008
* ''
Falsimargarita thielei
''Falsimargarita thielei'' is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
Description
The size of the shell varies between 8 mm and 22 mm.
Distribution
This marine species occurs off the South ...
''
(Hedley, 1916)
References
* Dell R.K. (1990). ''Antarctic Mollusca with special reference to the fauna of the Ross Sea''. Bulletin of the Royal Society of New Zealand., 27, 1–3,264-285 pp. page(s): 93
* Marshall, B. A. (2016). New species of Venustatrochus Powell, 1951 from New Zealand, and new species of Falsimargarita Powell, 1951 and a new genus of the Calliostomatidae from the southwest Pacific, with comments on some other calliostomatid genera (Mollusca: Gastropoda). Molluscan Research. 36: 119-141
External links
Powell A. W. B. (1951). Antarctic and Subantarctic Mollusca: Pelecypoda and Gastropoda. Discovery Reports, 26: 47-196, pl. 5-10
{{Taxonbar, from=Q5432780
Calliostomatidae
Gastropod genera