Margarella jason | |
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Scientific classification ![]() | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Clade: | Vetigastropoda |
Superfamily: | Trochoidea |
Family: | Calliostomatidae |
Genus: | Margarella |
Species: | M. jason |
Binomial name | |
Margarella jason A. W. B. Powell, 1951 | |
Margarella jason is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae. [1]
In biology, a species ( ) is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. While these definitions may seem adequate, when looked at more closely they represent problematic species concepts. For example, the boundaries between closely related species become unclear with hybridisation, in a species complex of hundreds of similar microspecies, and in a ring species. Also, among organisms that reproduce only asexually, the concept of a reproductive species breaks down, and each clone is potentially a microspecies.
Sea snail is a common name for snails that normally live in salt water, in other words marine gastropods. The taxonomic class Gastropoda also includes snails that live in other habitats, such as land snails and freshwater snails. Many species of sea snails are edible and exploited as food sources by humans.
Family is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy; it is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as being the "walnut family".
The height of the shell attains 10 mm.
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This marine species occurs off the South Georgia Islands at depths between 238 m and 270 m.
Calliostomatidae is a family of sea snails within the superfamily Trochoidea and the clade Vetigastropoda.
Margarella is a genus of sea snails, marine gastropod molluscs in the family Calliostomatidae.
Trochoidea is a superfamily of small to very large vetigastropod sea snails with gills and an operculum. Species within this superfamily have nacre as the inner shell layer. The families within this superfamily include the Trochidae, the top snails. This superfamily is the largest vetigastropodan superfamily, containing more than 2,000 species.
Margarella macquariensis is a species of marine gastropod mollusc in the family Trochidae, the top shells.
Typhlodaphne is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.
Belalora is a genus of sea snails, marine gastropod mollusks in the family Mangeliidae.
Margarites is a genus of sea snails, marine gastropod mollusks in the family Margaritidae.
Photinula is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.
Margarella antarctica is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae, the top snails.
Margarella bouvetia is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae, the top snails.
Venustatrochus is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.
Solariella kempi is a species of sea snail, a marine gastropod mollusk in the family Solariellidae.
Margarella achilles is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
Margarella expansa is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
Margarella obsoleta is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
Margarella refulgens is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
Margarella steineni is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
Margarella tropidophoroides is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
Venustatrochus georgianus is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
Margarella porcellana is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
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