|
Amphicyclotulus Rufescens
''Amphicyclotulus'' is a genus of tropical land snails with gills and an operculum, terrestrial gastropod mollusks in the family Neocyclotidae (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). Species Species within the genus ''Amphicyclotulus'' include: * '' Amphicyclotulus amethystinus'' (Guppy, 1868) - synonym: ''Amphicyclotulus mineri'' Bartsch, 1942 * '' Amphicyclotulus beauianus'' (Petit, 1853) * '' Amphicyclotulus dominicensis'' Bartsch, 1942 * '' Amphicyclotulus guadeloupensis'' de la Torre, Bartsch & Morrison, 1942 * '' Amphicyclotulus liratus'' Droüet, 1859 * '' Amphicyclotulus perplexus'' de la Torre, Bartsch & Morrison, 1942Bouchet, P. (1996). ''Amphicyclotulus perplexus''. In: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.1. . Downloaded on 25 March 2010. * '' Amphicyclotulus rufescens'' * '' Amphicyclotulus schrammi'' (Shuttleworth, 1857) See also * ''Amphicyclotus ''Amphicyclotus'' is a genus of tropical land snails ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphicyclotulus Amethystinus
''Amphicyclotulus amethystinus'' is a species of tropical land snail with a gill and an operculum, a terrestrial gastropod mollusk in the family Neocyclotidae. Shell description The shell is smooth, shining, not striate spirally, generally somewhat more depressed, deep chestnut or reddish brown. Whorls are a little flattened near the suture. The species may have subtle spiral striation, although there exists considerable variation; axial growth lines are clearly visible. The operculum is horny, diaphanous, concave externally, cartilaginous within, the nucleus projecting internally; with from ten to fourteen very narrow whorls, their rather lamellar outer edges slightly free. ''Amphicyclotulus amethystinus'' has spiral threads absent or only weakly present. There are found only two species in the genus ''Amphicyclotulus'' in Dominica. The other species is ''Amphicyclotulus dominicensis'' and it has spiral cords clearly present and raised. Robert John Lechmere Guppy (1868) ... [...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] |
Amphicyclotulus Schrammi
''Amphicyclotulus schrammi'' is a species of tropical land snail with a gill and an operculum, a terrestrial gastropod mollusk in the family Neocyclotidae. MolluscaBase eds. (2020). MolluscaBase. Amphicyclotulus schrammi (Shuttleworth, 1857). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1434819 on 2020-10-01 Distribution GuadeloupeRobinson D. G., Hovestadt A., Fields A. & Breure A. S. H. (July 2009). "The land Mollusca of Dominica (Lesser Antilles), with notes on some enigmatic or rare species". ''Zoologische Mededelingen ''Zoologische Mededelingen'' was a peer-reviewed open access scientific journal publishing papers and monographs on animal systematics. The publisher was the National Museum of Natural History Naturalis in the Netherlands. The first issue appeared ...'' 83 http://www.zoologischemededelingen.nl/83/nr03/a13 References Neocyclotidae {{Neocyclotidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphicyclotulus Rufescens
''Amphicyclotulus'' is a genus of tropical land snails with gills and an operculum, terrestrial gastropod mollusks in the family Neocyclotidae (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). Species Species within the genus ''Amphicyclotulus'' include: * '' Amphicyclotulus amethystinus'' (Guppy, 1868) - synonym: ''Amphicyclotulus mineri'' Bartsch, 1942 * '' Amphicyclotulus beauianus'' (Petit, 1853) * '' Amphicyclotulus dominicensis'' Bartsch, 1942 * '' Amphicyclotulus guadeloupensis'' de la Torre, Bartsch & Morrison, 1942 * '' Amphicyclotulus liratus'' Droüet, 1859 * '' Amphicyclotulus perplexus'' de la Torre, Bartsch & Morrison, 1942Bouchet, P. (1996). ''Amphicyclotulus perplexus''. In: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.1. . Downloaded on 25 March 2010. * '' Amphicyclotulus rufescens'' * '' Amphicyclotulus schrammi'' (Shuttleworth, 1857) See also * ''Amphicyclotus ''Amphicyclotus'' is a genus of tropical land snails ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphicyclotulus Perplexus
''Amphicyclotulus perplexus'' is a species of tropical land snail with a gill and an operculum, a terrestrial gastropod mollusk in the family Neocyclotidae. This land snail species is vulnerable to the possibility of extinction. Distribution This species is endemic to the island of Guadeloupe, West Indies The West Indies is a subregion of North America, surrounded by the North Atlantic Ocean and the Caribbean Sea that includes 13 independent island countries and 18 dependencies and other territories in three major archipelagos: the Greater A .... References Neocyclotidae Taxonomy articles created by Polbot {{Neocyclotidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphicyclotulus Liratus
''Amphicyclotulus liratus'' is a species of tropical land snail with a gill and an operculum, a terrestrial gastropod mollusk in the family Neocyclotidae. This land snail species is vulnerable to the possibility of extinction. Distribution This species is endemic to the island of Martinique, West Indies The West Indies is a subregion of North America, surrounded by the North Atlantic Ocean and the Caribbean Sea that includes 13 independent island countries and 18 dependencies and other territories in three major archipelagos: the Greater A .... References Neocyclotidae Taxonomy articles created by Polbot {{Neocyclotidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphicyclotulus Guadeloupensis
''Amphicyclotulus guadeloupensis'' was a species of tropical land snail with a gill and an operculum, a terrestrial gastropod mollusk in the family Neocyclotidae. This species was endemic to Guadeloupe. This land snail is now extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and .... References Neocyclotidae Extinct gastropods Taxonomy articles created by Polbot {{Guadeloupe-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphicyclotulus Beauianus
''Amphicyclotulus'' is a genus of tropical land snails with gills and an operculum, terrestrial gastropod mollusks in the family Neocyclotidae (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). Species Species within the genus ''Amphicyclotulus'' include: * '' Amphicyclotulus amethystinus'' (Guppy, 1868) - synonym: ''Amphicyclotulus mineri'' Bartsch, 1942 * '' Amphicyclotulus beauianus'' (Petit, 1853) * '' Amphicyclotulus dominicensis'' Bartsch, 1942 * '' Amphicyclotulus guadeloupensis'' de la Torre, Bartsch & Morrison, 1942 * ''Amphicyclotulus liratus'' Droüet, 1859 * ''Amphicyclotulus perplexus'' de la Torre, Bartsch & Morrison, 1942Bouchet, P. (1996). ''Amphicyclotulus perplexus''. In: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.1. . Downloaded on 25 March 2010. * ''Amphicyclotulus rufescens'' * ''Amphicyclotulus schrammi'' (Shuttleworth, 1857) See also * ''Amphicyclotus ''Amphicyclotus'' is a genus of tropical land snails wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy Of The Gastropoda (Bouchet & Rocroi, 2005)
The taxonomy of the Gastropoda as it was revised in 2005 by Philippe Bouchet and Jean-Pierre Rocroi is a system for the scientific classification of gastropod mollusks. (Gastropods are a taxonomic class of animals which consists of snails and slugs of every kind, from the land, from freshwater, and from saltwater.) The paper setting out this taxonomy was published in the journal ''Malacologia''. The system encompasses both living and extinct groups, as well as some fossils whose classification as gastropods is uncertain. The Bouchet & Rocroi system was the first complete gastropod taxonomy that primarily employed the concept of clades, and was derived from research on molecular phylogenetics; in this context a clade is a "natural grouping" of organisms based upon a statistical cluster analysis. In contrast, most of the previous overall taxonomic schemes for gastropods relied on morphological features to classify these animals, and used taxon ranks such as order, superorder ... [...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] |
_torquata_002.jpg "Click for more on -> Operculum (gastropod)")
.jpg "Click for more on -> Terrestrial Animal")