Calliobasis merista | |
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Shell of Calliobasis merista (holotype in MNHN, Paris) | |
Scientific classification ![]() | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Clade: | Vetigastropoda |
Superfamily: | Seguenzioidea |
Family: | Seguenziidae |
Subfamily: | Seguenziinae |
Genus: | Calliobasis |
Species: | C. merista |
Binomial name | |
Calliobasis merista Marshall, 1991 | |
Calliobasis merista is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae. [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 hierarcical 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".
This marine species occurs off New Caledonia.
Turritella is a genus of medium-sized sea snails with an operculum, marine gastropod mollusks in the family Turritellidae.
Seguenziidae is a family of very small deepwater sea snails, marine gastropod mollusks in the superfamily Seguenzioidea.
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.
Raphitoma is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.
Miltromorpha is a genus of sea snails, marine gastropod mollusks in the family Mitromorphidae, in the superfamily Conoidea the cone snails and their allies.. This genus was originally described by Carpenter off the west coast of the United States. The species occur mainly on the continental shelf and in insular environments. Their real diversity is poorly understood.
Calliobasis lapulapui is a species of sea snail, a marine gastropod mollusk in the family Seguenziidae.
Calliobasis magellani is a species of sea snail, a marine gastropod mollusk in the family Seguenziidae.
Calliobasis is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.
Calliotropis is a genus of sea snails, marine gastropod mollusks in the family Eucyclidae.
Astele is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.
Alvania is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Rissoidae.
Basilissa is a genus of extremely small deep water sea snails, marine gastropod mollusks in the family Seguenziidae.
Calliobasis bilix, common name the balanced top shell, is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.
Calliobasis bombax is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.
Calliobasis chlorosa is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.
Calliobasis festiva is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.
Calliobasis nepticula is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.
Calliobasis phimosa is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.
Calliobasis spectrum is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.
Calliobasis gemmata is a species of sea snail, a marine gastropod mollusk in the family Seguenziidae.
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