Argalista variecostata | |
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Scientific classification ![]() | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Clade: | Vetigastropoda |
Superfamily: | Phasianelloidea |
Family: | Colloniidae |
Subfamily: | Colloniinae |
Genus: | Argalista |
Species: | A. variecostata |
Binomial name | |
Argalista variecostata Powell, 1937 | |
Argalista variecostata is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae. [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.
Calcareous is an adjective meaning "mostly or partly composed of calcium carbonate", in other words, containing lime or being chalky. The term is used in a wide variety of scientific disciplines.
This marine species is endemic to New Zealand.
Homalopoma, common name the dwarf turbans, is a genus of mostly very small sea snails with a calcareous operculum, marine gastropoda molluscs in the family Colloniidae.
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms.
Homalopoma nana is a species of a minute sea snail, a marine gastropod mollusc in the family Colloniidae.
Homalopoma variecostata is a species of minute deepwater sea snail with a calcareous operculum, a marine gastropod mollusc in the family Colloniidae.
Cirsonella is a genus of small sea snails, marine gastropod molluscs in the family Skeneidae.
Cirsonella laxa is a minute sea snail, a marine gastropod mollusc in the family Skeneidae.
Colloniidae is a family of small sea snails with calcareous opercula, marine gastropod mollusks in the clade Vetigastropoda.
Leptothyra is a genus of sea snails, marine gastropod mollusks in the family Colloniidae.
Argalista is a genus of sea snails, marine gastropod mollusks in the family Colloniidae.
Argalista crassicostata is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.
Argalista fluctuata is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.
Argalista imperforata is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.
Argalista micans is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.
Argalista nana is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.
Argalista rotella is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.
Argalista umbilicata is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.
Argalista corallina is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.
Argalista fugitiva is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.
Argalista rosea is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.
Argalista roseopunctata is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.
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