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Bullia Digitalis
''Bullia digitalis'', the finger plough shell or plough snail, is a species of sea snail, a marine gastropod mollusk in the family (biology), family Nassariidae, the Nassa mud snails or dog whelks. These dominant scavengers are attracted by the scent of decaying animal matter from a considerable distance so that they converge from all directions to feed. Description Length: 60 mm Narrow, smooth shell with a long, pointed spire, usually light yellow or creamy, often tinged with violet or yellow. The large, oval foot is offwhite. The Operculum (gastropod), operculum has serrated margins. The ovate shell is elongated, subturreted, smooth and polished. It is of a reddish yellow color. The shell is composed of seven Whorl (mollusc), whorls, hardly convex. The Suture (anatomy), suture which separates them is simple, shallow and submargined. The Apex (mollusc), apex is moderately pointed. Pretty prominent striae of growth are seen upon the lowest whorl. The ovate Aperture (moll ... [...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] |
