Clanculus bronni | |
---|---|
Drawing of a shell of Clanculus bronni | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Clade: | Vetigastropoda |
Order: | Trochida |
Superfamily: | Trochoidea |
Family: | Trochidae |
Genus: | Clanculus |
Species: | C. bronni |
Binomial name | |
Clanculus bronni (Dunker, 1860) | |
Synonyms [1] | |
|
Clanculus bronni is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails. [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.
Family is one of the eight major hierarchical 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".
The size of the shell varies between 5 mm and 7 mm. The perforate shell has a globose-conoid shape. It is brownish and white variegated. The six whorls are convex, the last subangulate toward the base. The base of the shell is planoconvex. The narrow umbilicus crenated. The aperture is subrotund. The lip is costate within. The oblique columella terminates in a thick tooth. [3]
A whorl is a single, complete 360° revolution or turn in the spiral growth of a mollusc shell. A spiral configuration of the shell is found in of numerous gastropods, but it is also found in shelled cephalopods including Nautilus, Spirula and the large extinct subclass of cephalopods known as the ammonites.
The umbilicus of a shell is the axially aligned, hollow cone-shaped space within the whorls of a coiled mollusc shell. The term umbilicus is often used in descriptions of gastropod shells, i.e. it is a feature present on the ventral side of many snail shells, including some species of sea snails, land snails, and freshwater snails.
The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where the head-foot part of the body of the animal emerges for locomotion, feeding, etc.
The subspecies Clanculus bronni ssp. fraterculusH. A. Pilsbry, 1904 (synonym: Clanculus hizenensis fraterculusPilsbry, 1904 - original combination) is described by Pilsbry as trochiform with a flattened base. The ground color is nearly white, radially maculated with brown on the upper surface and smaller spots interposed between the others at the peripheral region. The base has paler small spots on the ribs, sometimes partially arranged in radial stripes. The 5½ or 6 whorls are convex and parted by a narrow, deep suture. The apical 1½ whorls are uniform, the next whorls irregularly dotted with pink on a pale buff-brown ground.
This marine species occurs in the Indo-Pacific and off Japan, Singapore, Malaysia, Thailand and Australia (Northern Territory, Queensland)
Japan is an island country in East Asia. Located in the Pacific Ocean, it lies off the eastern coast of the Asian continent and stretches from the Sea of Okhotsk in the north to the East China Sea and the Philippine Sea in the south.
Singapore, officially the Republic of Singapore, is an island city-state in Southeast Asia. It lies one degree north of the equator, at the southern tip of the Malay Peninsula, with Indonesia's Riau Islands to the south and Peninsular Malaysia to the north. Singapore's territory consists of one main island along with 62 other islets. Since independence, extensive land reclamation has increased its total size by 23%. The country is known for its transition from a developing to a developed one in a single generation under the leadership of its founder Lee Kuan Yew.
Malaysia is a country in Southeast Asia. The federal constitutional monarchy consists of 13 states and three federal territories, separated by the South China Sea into two similarly sized regions, Peninsular Malaysia and East Malaysia. Peninsular Malaysia shares a land and maritime border with Thailand in the north and maritime borders with Singapore in the south, Vietnam in the northeast, and Indonesia in the west. East Malaysia shares land and maritime borders with Brunei and Indonesia and a maritime border with the Philippines and Vietnam. Kuala Lumpur is the national capital and largest city while Putrajaya is the seat of federal government. With a population of over 30 million, Malaysia is the world's 44th most populous country. The southernmost point of continental Eurasia, Tanjung Piai, is in Malaysia. In the tropics, Malaysia is one of 17 megadiverse countries, with large numbers of endemic species.
Clanculus is a genus of sea snail, marine gastropod molluscs of the family Trochidae, the top shells.
Clanculus margaritarius, common name the beautiful clanculus, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Clanculus miniatus, common name the keeled top shell, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Clanculus villanus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Sericominolia stearnsii is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Stomatella stellata is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Euchelus is a genus of sea snails, marine gastropod mollusks in the family Chilodontaidae.
Clanculus atropurpureus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Clanculus comarilis is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Clanculus denticulatus, common name the toothed clanculus, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Clanculus euchelioides, common name the small top shell, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Clanculus flagellatus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Clanculus gemmulifer is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Clanculus granti is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Clanculus johnstoni is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Clanculus largillierti is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Clanculus microdon is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Clanculus minor is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Clanculus ringens, common name the ringent clanculus, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Clanculus spadiceus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.