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Lirularia Canaliculata
''Lirularia canaliculata'' is a species of sea snail, a marine gastropod mollusk in the family Trochidae. Description The height of this small shell measures 3 mm. It is broadly umbilicated, pearly and beautifully prismatic. The spire is depressed-conical. It contains five whorls, the first two are smooth, the remainder spirally lirate, and ornamented beneath the channelled sutures with a series of white tubercles, here and there marked with brown. The body whorl is encircled by chestnut-dotted carinae. The base of the shell contains a purple-brown zone. The umbilicus is perspective, margined by a somewhat tubercular cord. The aperture is subcircular. (described as ''Minolia canaliculata'')< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
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. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
