Aviassiminea palitans | |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
(unranked): | clade Caenogastropoda clade Hypsogastropoda clade Littorinimorpha |
Superfamily: | Rissooidea |
Family: | Assimineidae |
Subfamily: | Assimineinae |
Genus: | Aviassiminea |
Species: | A. palitans |
Binomial name | |
Aviassiminea palitans Fukuda & Ponder, 2003 [1] | |
Aviassiminea palitans is a species of minute operculate snail, a marine gastropod mollusk or micromollusk in the family Assimineidae. [2]
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.
A snail is, in loose terms, a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name snail is also used for most of the members of the molluscan class Gastropoda that have a coiled shell that is large enough for the animal to retract completely into. When the word "snail" is used in this most general sense, it includes not just land snails but also numerous species of sea snails and freshwater snails. Gastropods that naturally lack a shell, or have only an internal shell, are mostly called slugs, and land snails that have only a very small shell are often called semi-slugs.
A micromollusk is a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also reach adult size at very small dimensions.
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This section is empty.You can help by adding to it.(August 2010) |
Murex is a genus of medium to large sized predatory tropical sea snails. These are carnivorous marine gastropod molluscs in the family Muricidae, commonly called "murexes" or "rock snails".
Eatonina is a genus of minute sea snails, marine gastropod mollusks in the family Cingulopsidae.
Conassiminea studderti is a species of minute operculate snail, a marine gastropod mollusk or micromollusk in the family Assimineidae.
Conassiminea zheni is a species of minute operculate snail, a marine gastropod mollusk or micromollusk in the family Assimineidae.
Cryptassiminea adelaidensis is a species of minute operculate snail, a marine gastropod mollusk or micromollusk in the family Assimineidae.
Cryptassiminea glenelgensis is a species of minute operculate snail, a marine gastropod mollusk or micromollusk in the family Assimineidae.
Cryptassiminea insolata is a species of minute operculate snail, a marine gastropod mollusk or micromollusk in the family Assimineidae.
Cryptassiminea kershawi is a species of minute operculate snail, a marine gastropod mollusk or micromollusk in the family Assimineidae.
Cryptassiminea surryensis is a species of minute operculate snail, a marine gastropod mollusk or micromollusk in the family Assimineidae.
Rugapedia androgyna is a species of minute operculate snail, a marine gastropod mollusk or micromollusk in the family Assimineidae.
Suterilla climoi is a species of minute operculate snail, a marine gastropod mollusk or micromollusk in the family Assimineidae.
Suterilla imperforata is a species of minute operculate snail, a marine gastropod mollusk or micromollusk in the family Assimineidae.
Suterilla julieae is a species of minute operculate snail, a marine gastropod mollusk or micromollusk in the family Assimineidae.
Aviassiminea is a genus of minute operculate snails, marine gastropod mollusks or micromollusks in the family Assimineidae.
Conassiminea is a genus of minute operculate snails, marine gastropod mollusks or micromollusks in the family Assimineidae.
Cryptassiminea is a genus of minute operculate snails, marine gastropod mollusks or micromollusks in the family Assimineidae.
Rugapedia is a genus of minute operculate snails, marine gastropod mollusks or micromollusks in the family Assimineidae.
Suterilla is a genus of minute operculate snails, marine gastropod mollusks or micromollusks in the family Assimineidae.
Onoba is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Rissoidae.
Pusillina is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Rissoidae.
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