Calliostomatidae
Encyclopedia
Calliostomatidae is a family of sea snail
s within the superfamily Trochoidea and the clade
Vetigastropoda
.
. They may possess or lack an umbilicus. The columella
is sometimes thicker, partially covering the aperture. The spiral whorl
s can differ between narrow and robust. They inhabit a wide range of ocean habitats, from the intertidal zone
to mid-bathyal depths
.
):
and Calliostoma unicum
that were used in molecular phylogeny
studies.
Calliostomatinae
Thysanodontinae:
subfamily ?
Sea snail
Sea snail is a common name for those snails that normally live in saltwater, marine gastropod molluscs....
s within the superfamily Trochoidea and the clade
Clade
A clade is a group consisting of a species and all its descendants. In the terms of biological systematics, a clade is a single "branch" on the "tree of life". The idea that such a "natural group" of organisms should be grouped together and given a taxonomic name is central to biological...
Vetigastropoda
Vetigastropoda
Vetigastropoda is a major taxonomic group of sea snails, marine gastropod mollusks that form a very ancient lineage. Taxonomically Vetigastropoda are sometimes treated as an order although they are a clade in Bouchet and Rocroi, 2005....
.
Description
The Calliostomatidae are unusually diverse. They are characterized by a stepped spire and a pointy apertureAperture (mollusc)
The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where part of the body of the animal emerges for locomotion, feeding, etc....
. They may possess or lack an umbilicus. The columella
Columella
Lucius Junius Moderatus Columella is the most important writer on agriculture of the Roman empire. Little is known of his life. He was probably born in Gades , possibly of Roman parents. After a career in the army , he took up farming...
is sometimes thicker, partially covering the aperture. The spiral whorl
Whorl (mollusc)
A whorl is a single, complete 360° revolution or turn in the spiral growth of a mollusc shell. A spiral configuration of the shell is found in of numerous gastropods, but it is also found in shelled cephalopods including Nautilus, Spirula and the large extinct subclass of cephalopods known as the...
s can differ between narrow and robust. They inhabit a wide range of ocean habitats, from the intertidal zone
Intertidal zone
The intertidal zone is the area that is above water at low tide and under water at high tide . This area can include many different types of habitats, with many types of animals like starfish, sea urchins, and some species of coral...
to mid-bathyal depths
Bathyal zone
The bathyal zone or bathypelagic – from Greek βαθύς , deep – is that part of the pelagic zone that extends from a depth of 1000 to 4000 metres below the ocean surface. It lies between the mesopelagic above, and the abyssopelagic below. The average temperature hovers at about 39°F...
.
2005 taxonomy
This family consists of two following subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005)
The taxonomy of the Gastropoda as it was revised by Philippe Bouchet and Jean-Pierre Rocroi is currently the most up-to-date overall system for classifying gastropod mollusks...
):
- subfamily CalliostomatinaeCalliostomatinaeCalliostomatinae is an extinct family of gastropods.-Description:They are somewhat large sea snails - marine gastropod mollusks, with gills and operculum.-External Links:*...
Thiele 1924 (1847)- tribeTribe (biology)In biology, a tribe is a taxonomic rank between family and genus. It is sometimes subdivided into subtribes.Some examples include the tribes: Canini, Acalypheae, Hominini, Bombini, and Antidesmeae.-See also:* Biological classification* Rank...
Calliostomatini Thiele 1924 (1847) - synonym: Ziziphininae Gray, 1847 - tribe Fautricini Marshall, 1995
- tribe
- subfamily Thysanodontinae Marshall, 1988
2008 taxonomy
According to Williams et al. (2008) the Calliostomatidae stays in Trochoidea. Up to 2008 there were only two species Calliostoma javanicumCalliostoma javanicum
Calliostoma javanicum is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae....
and Calliostoma unicum
Calliostoma unicum
Calliostoma unicum is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.-Description:The shell has inflated globose whorls with a rounded periphery and a closed umbilicus. The surface texture consists of spiral striations which are beaded on the early whorls. The...
that were used in molecular phylogeny
Molecular phylogeny
Molecular phylogenetics is the analysis of hereditary molecular differences, mainly in DNA sequences, to gain information on an organism's evolutionary relationships. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree...
studies.
2010 taxonomy
The first molecular phylogeny study of the family Calliostomatidae was made by Williams et al. (2010) Based on molecular data, they confirmed that Thysanodontinae Marshall, 1988 belongs to the family Calliostomatidae,. It was already previously placed there based on morphological data.Genera
Genera included in this family:Calliostomatinae
- Akoya Habe, 1961
- Alertalex Dell, 1956
- Ampullotrochus Monterosato, 1890
- AsteleAsteleAstele is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.-Species:Species within the genus Astele include:* Astele allanae * Astele armillatum...
Swainson, 1855 - Astelena Iredale, 1924
- BathyfautorBathyfautorBathyfautor is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.-Species:Species within the genus Bathyfautor include:* Bathyfautor caledonicum Marshall, 1995* Bathyfautor coriolis Marshall, 1995...
Marshall, 1995 - BenthastelenaBenthastelenaBenthastelena is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae -Species:Species within this genus include:* Benthastelena haliarchus * Benthastelena katherina Iredale, 1936...
Iredale, 1936 - CalliostomaCalliostomaCalliostoma is a genus of small to medium-sized sea snails with gills and an operculum, marine gastropod molluscs within the family Calliostomatidae, the calliostoma top snails . Previously this genus was placed within the family Trochidae...
Swainson, 1840 - type genus - Carinator Ikebe, 1942
- Coralastele Iredale, 1930
- DactylasteleDactylasteleDactylastele is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.-Species:Species within the genus Dactylastele include:* Dactylastele burnupi * Dactylastele duplicatum Dactylastele is a genus of sea snails, marine gastropod mollusks in the family...
Marshall, 1995 - Dymares Schwengel, 1942
- Elmerlinia Clench & Turner, 1960
- Eucasta Dall, 1889
- FalsimargaritaFalsimargaritaFalsimargarita is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.-Species:Species within the genus Falsimargarita include:* Falsimargarita benthicola Dell, 1990* Falsimargarita gemma...
Powell, 1951 - FautorFautorFautor is a genus of small sea snails, marine gastropod molluscs in the family Calliostomatidae.Some authors place this taxon in the subgenus Calliostoma .-Species:Species within the genus Fautor include:...
Iredale, 1924 - FautrixFautrixFautrix is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.-Species:Species within the genus Fautrix include:* Fautrix aquilonia Marshall, 1995* Fautrix candida Marshall, 1995...
Marshall, 1995 - Fluxina Dall, 1881
- Kombologion Clench & Turner, 1960
- LaetifautorLaetifautorLaetifautor is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.-Species:Species within the genus Laetifautor include:* Laetifautor deceptum * Laetifautor elegans Habe, 1960...
Iredale, 1929 - Leiotrochus Conrad, 1862
- Maurea Oliver, 1926
- Neocalliostoma Castellanos & Fernandez, 1976
- Omphalotukaia Yoshida, 1948
- OtukaiaOtukaiaOtukaia is a genus of medium-sized sea snails, marine gastropod molluscs in the family Calliostomatidae, the top shells. Otukaia has long been considered a subspecies of Calliostoma and is still treated as such by many authorities....
Ikebe, 1942 - Photinastoma Powell, 1951
- PhotinulaPhotinulaPhotinula is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.-Species:Species within the genus Photinula include:* Photinula achilles Strebel, 1908* Photinula expansa Photinula is a genus of sea snails, marine gastropod mollusks in the family...
Adams, 1854 - SelasteleSelasteleSelastele is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.-Species:Species within the genus Selastele include:* Selastele kopua * Selastele limatulum...
Marshall, 1995 - Sinutor Cotton & Godfrey, 1935
- Tropidotrochus Parodiz, 1977
- Venustas Allan, 1926
- Ziziphinus Gray, 1842
Thysanodontinae:
- CarinasteleCarinasteleCarinastele is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.-Species:Species within the genus Carinastele include:* Carinastele coronata Marshall, 1988* Carinastele jugosa Marshall, 1988...
Marshall, 1988 - HerbertinaHerbertinaHerbertina is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.-Species:Species within the genus Herbertina include:* Herbertina cognata Marshall, 1988* Herbertina eos Marshall, 1988...
Marshall, 1988 - ThysanodontaThysanodontaThysanodonta is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.-Species:Species within the genus Thysanodonta include:* Thysanodonta aucklandica Marshall, 1988* Thysanodonta boucheti Marshall, 1988...
Marshall, 1988
subfamily ?
- VenustatrochusVenustatrochusVenustatrochus is a genus of sea snails, marine gastropod mollusks in the family Trochidae, the top snails.-Species:Species within the genus Venustatrochus include:* Venustatrochus secundus Powell, 1958...
PowellArthur William Baden PowellDr Arthur William Baden Powell CBE was a New Zealand malacologist, naturalist and palaeontologist, a major influence in the study and classification of New Zealand molluscs through much of the twentieth century. He was known to his friends and family by his third name, "Baden".Powell was born at...
, 1951