Brookula argentina | |
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Clade: | Vetigastropoda |
Superfamily: | Seguenzioidea |
Family: | incertae sedis |
Genus: | Brookula |
Species: | B. argentina |
Binomial name | |
Brookula argentina (Zelaya, Absalão & Pimenta, 2006) | |
Synonyms [1] | |
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Brookula argentina is a species of sea snail, a marine gastropod mollusk, unassigned in the superfamily Seguenzioidea. [1] [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.
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.
Seguenzioidea is a superfamily of minute to medium-sized sea snails, marine gastropod mollusks in the clade Vetigastropoda.
The height of the shell attains 1.2 mm.
This section needs expansion. You can help by adding to it.(April 2013) |
This marine species occurs off South Georgia and Antarctica
South Georgia is an island in the southern Atlantic Ocean that is part of the British Overseas territory of South Georgia and the South Sandwich Islands. The main settlement is Grytviken. South Georgia is 167.4 kilometres (104 mi) long and 1.4 to 37 km wide. It is about 830 km (520 mi) northeast of Coronation Island and 550 km (340 mi) northwest from Zavodovski Island, the nearest South Sandwich island.
Antarctica is Earth's southernmost continent. It contains the geographic South Pole and is situated in the Antarctic region of the Southern Hemisphere, almost entirely south of the Antarctic Circle, and is surrounded by the Southern Ocean. At 14,000,000 square kilometres, it is the fifth-largest continent. For comparison, Antarctica is nearly twice the size of Australia. About 98% of Antarctica is covered by ice that averages 1.9 km in thickness, which extends to all but the northernmost reaches of the Antarctic Peninsula.
Brookula annectens is a species of minute sea snail, a marine gastropod mollusc, unassigned in the superfamily Seguenzioidea.
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Brookula nepeanensis is a species of sea snail, a marine gastropod mollusk, unassigned in the superfamily Seguenzioidea.
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