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Rissopsis Typica
''Rissopsis'' is a genus of very small, somewhat amphibious land snails that have a gill and an operculum, semi- terrestrial gastropod mollusks or micromollusk in the family Iravadiidae Iravadiidae is a family of minute sea snails, marine gastropod molluscs in the superfamily Truncatelloidea and the clade Littorinimorpha Littorinimorpha is a large order of snails, gastropods, consisting primarily of sea snails (marine sp ....Bouchet, P.; Gofas, S. (2012). Rissopsis Garrett, 1873. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=535772 on 2012-08-14 Species Species within the genus ''Rissopsis'' include: * '' Rissopsis prolongata'' (Turton, 1932) * '' Rissopsis tuba'' Kilburn, 1977 * '' Rissopsis typica'' Garrett, 1873 ;Species brought into synonymy: * ''Rissopsis brevis'' May, 1919: synonym of '' Austrorissopsis consobrina'' (Tate & May, 1900) * ''Rissopsis expansa'' Powell, 1930: synonym of '' Eusetia e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operculum (gastropod)
The operculum (; ) is a corneous or calcareous anatomical structure like a trapdoor that exists in many (but not all) groups of sea snails and freshwater snails, and also in a few groups of land snails; the structure is found in some marine and freshwater gastropods, and in a minority of terrestrial gastropods, including the families Helicinidae, Cyclophoridae, Aciculidae, Maizaniidae, Pomatiidae, etc. The operculum is attached to the upper surface of the foot and in its most complete state, it serves as a sort of "trapdoor" to close the aperture of the shell when the soft parts of the animal are retracted. The shape of the operculum varies greatly from one family of gastropods to another. It is fairly often circular, or more or less oval in shape. In species where the operculum fits snugly, its outline corresponds exactly to the shape of the aperture of the shell and it serves to seal the entrance of the shell. Many families have opercula that are reduced in size, and which a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rissopsis Typica
''Rissopsis'' is a genus of very small, somewhat amphibious land snails that have a gill and an operculum, semi- terrestrial gastropod mollusks or micromollusk in the family Iravadiidae Iravadiidae is a family of minute sea snails, marine gastropod molluscs in the superfamily Truncatelloidea and the clade Littorinimorpha Littorinimorpha is a large order of snails, gastropods, consisting primarily of sea snails (marine sp ....Bouchet, P.; Gofas, S. (2012). Rissopsis Garrett, 1873. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=535772 on 2012-08-14 Species Species within the genus ''Rissopsis'' include: * '' Rissopsis prolongata'' (Turton, 1932) * '' Rissopsis tuba'' Kilburn, 1977 * '' Rissopsis typica'' Garrett, 1873 ;Species brought into synonymy: * ''Rissopsis brevis'' May, 1919: synonym of '' Austrorissopsis consobrina'' (Tate & May, 1900) * ''Rissopsis expansa'' Powell, 1930: synonym of '' Eusetia e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rissopsis Tuba
''Rissopsis'' is a genus of very small, somewhat amphibious land snails that have a gill and an operculum, semi- terrestrial gastropod mollusks or micromollusk in the family Iravadiidae.Bouchet, P.; Gofas, S. (2012). Rissopsis Garrett, 1873. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=535772 on 2012-08-14 Species Species within the genus ''Rissopsis'' include: * '' Rissopsis prolongata'' (Turton, 1932) * '' Rissopsis tuba'' Kilburn, 1977 * ''Rissopsis typica ''Rissopsis'' is a genus of very small, somewhat amphibious land snails that have a gill and an operculum, semi- terrestrial gastropod mollusks or micromollusk in the family Iravadiidae Iravadiidae is a family of minute sea snails, ma ...'' Garrett, 1873 ;Species brought into synonymy: * ''Rissopsis brevis'' May, 1919: synonym of '' Austrorissopsis consobrina'' (Tate & May, 1900) * ''Rissopsis expansa'' Powell, 1930: synonym of '' Eusetia ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rissopsis Prolongata
''Rissopsis'' is a genus of very small, somewhat amphibious land snails that have a gill and an operculum, semi- terrestrial gastropod mollusks or micromollusk in the family Iravadiidae.Bouchet, P.; Gofas, S. (2012). Rissopsis Garrett, 1873. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=535772 on 2012-08-14 Species Species within the genus ''Rissopsis'' include: * '' Rissopsis prolongata'' (Turton, 1932) * ''Rissopsis tuba'' Kilburn, 1977 * ''Rissopsis typica ''Rissopsis'' is a genus of very small, somewhat amphibious land snails that have a gill and an operculum, semi- terrestrial gastropod mollusks or micromollusk in the family Iravadiidae Iravadiidae is a family of minute sea snails, ma ...'' Garrett, 1873 ;Species brought into synonymy: * ''Rissopsis brevis'' May, 1919: synonym of '' Austrorissopsis consobrina'' (Tate & May, 1900) * ''Rissopsis expansa'' Powell, 1930: synonym of '' Eusetia exp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') 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 the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micromollusk
A micromollusk is a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also reach adult size at very small dimensions. These tiny mollusks or their tiny shells are easy to overlook, as many of them are not very noticeable to the naked eye, and thus many people are not aware that they even exist. Nonetheless there are large numbers of families and vast numbers of mollusk species, in particular marine gastropods or sea snails, which are minute enough to be considered micromollusks. Considerable numbers of marine gastropod species are only about 5 or 6 mm in adult size; many others are only about 2 or 3 mm in adult size; and a few have adult shells which are as small as one millimeter or even smaller still. Despite their tiny size, many of the shells have a good deal of elaborate sculpture. A fair number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs. The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian. , 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding, and re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terrestrial Animal
Terrestrial animals are animals that live predominantly or entirely on land (e.g. cats, dogs, ants, spiders), as compared with aquatic animals, which live predominantly or entirely in the water (e.g. fish, lobsters, octopuses), and amphibians, which rely on a combination of aquatic and terrestrial habitats (e.g. frogs and newts). Some groups of insects are terrestrial, such as ants, butterflies, earwigs, cockroaches, grasshoppers and many others, while other groups are partially aquatic, such as mosquitoes and dragonflies, which pass their larval stages in water. Terrestrial animals tend to be more developed and intelligent than aquatic animals. Terrestrial classes The term "terrestrial" is typically applied to species that live primarily on the ground, in contrast to arboreal species, which live primarily in trees. There are other less common terms that apply to specific groups of terrestrial animals: *Saxicolous creatures are rock dwelling. "Saxicolous" is derived from t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gill
A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist. The microscopic structure of a gill presents a large surface area to the external environment. Branchia (pl. branchiae) is the zoologists' name for gills (from Ancient Greek ). With the exception of some aquatic insects, the filaments and lamellae (folds) contain blood or coelomic fluid, from which gases are exchanged through the thin walls. The blood carries oxygen to other parts of the body. Carbon dioxide passes from the blood through the thin gill tissue into the water. Gills or gill-like organs, located in different parts of the body, are found in various groups of aquatic animals, including mollusks, crustaceans, insects, fish, and amphibians. Semiterrestrial marine animals such as crabs and mudskippers have gill cham ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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