|
Cystiscus Rotunda
Cystiscus is a Taxonomy (biology), taxonomic genus of minute sea snails, marine (ocean), marine gastropod mollusks or micromollusks. This genus was placed in the family Cystiscidae by Coovert and Coovert, 1995. Previously the genus was in the family Marginellidae, where it is still placed by many other malacologists. Diagnosis Exoskeleton, Shell minute to small, white, hyaline; Spire (mollusc), spire immersed to low; lip thickened, smooth or weakly denticulate; external Varix (mollusc), varix absent; siphonal notch absent; posterior notch absent; lacking collabral parietal callus ridge; columella multiplicate, with combined usually 2 to 8 plications plus parietal lirae, first plication usually strong and raised. Mantle (mollusc), Mantle smooth, at least partially extending over external shell surface. Shell description Shell minute to small (adult length ). Color white, hyaline; surface smooth, glossy. Shape usually elliptic, obovate, or subtriangular; weakly shouldered. Spir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cystiscus Yasawaensis
''Cystiscus yasawaensis'' is a species of very small sea snail, a marine gastropod mollusk or micromollusk in the family (biology), family Cystiscidae. Description The shell can grow to be 2.2 mm in length. Distribution ''Cystiscus yasawaensis'' can be found off the coast of Fiji. References Gastropods described in 2006 Cystiscus, yasawaensis {{Cystiscidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radula
The radula (; : radulae or radulas) is an anatomical structure used by mollusks for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the esophagus. The radula is unique to the mollusks, and is found in every class of mollusk except the bivalves, which instead use cilia, waving filaments that bring minute organisms to the mouth. Within the gastropods, the radula is used in feeding by both herbivorous and carnivorous snails and slugs. The arrangement of teeth ( denticles) on the radular ribbon varies considerably from one group to another. In most of the more ancient lineages of gastropods, the radula is used to graze, by scraping diatoms and other microscopic algae off rock surfaces and other substrates. Predatory marine snails such as the Naticidae use the radula plus an acidic secretion to bore through the shell of other mollusks. Other predatory marine snails, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cystiscus Boucheti
''Cystiscus boucheti'' is a species of very small sea snail, a marine gastropod mollusk or micromollusk in the family Cystiscidae. Description Distribution This marine species occurs off New Caledonia New Caledonia ( ; ) is a group of islands in the southwest Pacific Ocean, southwest of Vanuatu and east of Australia. Located from Metropolitan France, it forms a Overseas France#Sui generis collectivity, ''sui generis'' collectivity of t .... References Gastropods described in 2003 boucheti {{Cystiscidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cystiscus Beqae
''Cystiscus beqae'' is a species of very small sea snail, a marine gastropod mollusk or micromollusk in the family Cystiscidae Cystiscidae is a taxonomic family of small sea snails, marine gastropod mollusks or micromollusks. Description The shell is minute to large, either white, uniformly colored, or patterned; the surface is smooth, sculptured, or axially costat .... Description The size of the shell attains 1.46 mm. Distribution This marine species was found off Beqa Island, Fiji. References External links Wakefield A. & McCleery T. 2006. Descriptions of new species of Pacific Cystiscus Stimpson, 1865 (Gastropoda : Cystiscidae). Part 1: species with banded mantle patterns. Novapex 7 (Hors-série 4): 1-31 Gastropods described in 2006 beqae {{Cystiscidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cystiscus Aurantius
''Cystiscus aurantius'' is a species of very small sea snail, a marine gastropod mollusk or micromollusk in the family Cystiscidae. Description Distribution This marine species occurs off New Caledonia New Caledonia ( ; ) is a group of islands in the southwest Pacific Ocean, southwest of Vanuatu and east of Australia. Located from Metropolitan France, it forms a Overseas France#Sui generis collectivity, ''sui generis'' collectivity of t .... References Gastropods described in 2003 aurantius {{Cystiscidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Read Le Brockton Tomlin
John Read le Brockton Tomlin (15 August 1864 – 24 December 1954) was a British malacologist. He was one of the founders of the Malacological Society of London and was president of the Conchological Society of Great Britain & Ireland on two separate occasions. Conchological Society of Great Britain & Ireland. accessed 4 October 2010. Tomlin named more than a hundred of s, including: * The family [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cystiscus Aphanacme
''Cystiscus aphanacme'' is a species of very small sea snail, a marine gastropod mollusk or micromollusk in the family Cystiscidae Cystiscidae is a taxonomic family of small sea snails, marine gastropod mollusks or micromollusks. Description The shell is minute to large, either white, uniformly colored, or patterned; the surface is smooth, sculptured, or axially costat .... References Gastropods described in 1918 aphanacme {{Cystiscidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Charles Hippolyte Crosse
Joseph Charles Hippolyte Crosse (1 October 1826 in Paris – 7 August 1898) was a French conchologist. With Paul-Henri Fischer (1835–1893) he was co-editor of ''Journal de Conchyliologie'' (from 1861). Crosse was the author of over 300 works on Mollusca. He lived in the Château d'Argeville near Fontainebleau and died there on 7 August 1898. The first ''Journal de Conchyliologie'' issue of 1899 was dedicated to his life and work. vol 67 no. 1, 1899, pages 21-2 Works *Notice sur les bulimes de la Nouvelle-Calédonie, et description de deux espèces nouvelles (1855). *Descriptions de coquilles nouvelles (1859). *Un Mollusque bien maltraité, ou Comment M. Victor-Hugo comprend l'organisation du poulpe (1866). *Diagnoses molluscorum novo ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cystiscus Angasi
''Cystiscus angasi'' is a species of very small sea snail, a marine gastropod mollusk or micromollusk in the family Cystiscidae. Description The size of the shell attains 1.8 mm. Distribution This marine species was found off Port Jackson Port Jackson, commonly known as Sydney Harbour, is a natural harbour on the east coast of Australia, around which Sydney was built. It consists of the waters of Sydney Harbour, Middle Harbour, North Harbour and the Lane Cove and Parramatta ..., Australia. References External links Crosse H. (1870). Diagnoses molluscorum novorum. Journal de Conchyliologie. 18: 301-304 Coovert G.A. & Coovert H.K. (1995) Revision of the supraspecific classification of marginelliform gastropods. The Nautilus 109(2-3): 43-110 Gastropods described in 1870 angasi {{Cystiscidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic
The Atlantic Ocean is the second largest of the world's five oceanic divisions, with an area of about . It covers approximately 17% of Earth's surface and about 24% of its water surface area. During the Age of Discovery, it was known for separating the New World of the Americas (North America and South America) from the Old World of Afro-Eurasia (Africa, Asia, and Europe). Through its separation of Afro-Eurasia from the Americas, the Atlantic Ocean has played a central role in the development of human society, globalization, and the histories of many nations. While the Norse were the first known humans to cross the Atlantic, it was the expedition of Christopher Columbus in 1492 that proved to be the most consequential. Columbus's expedition ushered in an age of exploration and colonization of the Americas by European powers, most notably Portugal, Spain, France, and the United Kingdom. From the 16th to 19th centuries, the Atlantic Ocean was the center of both an eponymou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene followed the Oligocene and preceded the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by distinct global events but by regionally defined transitions from the warmer Oligocene to the cooler Pliocene Epoch. During the Early Miocene, Afro-Arabia collided with Eurasia, severing the connection between the Mediterranean and Indian Oceans, and allowing the interchange of fauna between Eurasia and Africa, including the dispersal of proboscideans and Ape, hominoids into Eurasia. During the late Miocene, the conn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligogene
Oligogenic inheritance (Greek ὀλίγος – ''ὀligos'' = few, a little) describes a trait that is influenced by a few genes. Oligogenic inheritance represents an intermediate between monogenic inheritance in which a trait is determined by a single causative gene, and polygenic inheritance, in which a trait is influenced by many genes and often environmental factors. Historically, many traits were thought to be governed by a single causative gene (in what is deemed monogenic inheritance), however work in genetics revealed that these traits are comparatively rare, and in most cases so-called monogenic traits are predominantly influenced by one gene, but can be mediated by other genes of small effect. History Around the 1930s/40s, evidence that multiple genes could affect the risk of disease that showed discrete inheritance patterns, due to differences in the age of onset of disease for siblings. The age of onset for sibling pairs was very similar, but between pairs of siblin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
