|
Lauriidae
Lauriidae is a family of land snails. It is classified within the informal group Orthurethra, itself belonging to the clade Stylommatophora within the clade Eupulmonata (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). The family Lauriidae has no subfamilies. Genera Genera include: Fauna Europaea. *'' Hemilauria'' Waldén, 1983 * '''' Gray, 1840 * '' Leiostyla
''Leiostyla'' is a gen ...
[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lauria (gastropod)
''Lauria'' is a genus of land snails in the family Lauriidae.MolluscaBase eds. (2021). MolluscaBase. Lauria Gray, 1840. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=426390 on 2021-04-28 Species Species include: Fauna Europaea. * ''Lauria bourbonensis'' Pilsbry, 1922 * ''Lauria cryptoplax'' (Melvill & Ponsonby, 1899) * ''Lauria cylindracea'' (Da Costa, 1778) * ''Lauria dadion'' (Benson, 1864) * ''Lauria desiderata'' (Preston, 1911) * ''Lauria fanalensis'' (R. T. Lowe, 1852) * ''Lauria farquhari'' (Melvill & Ponsonby, 1898) * ''Lauria fasciolata'' (Morelet, 1860) * ''Lauria gomerensis'' D. T. Holyoak & G. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lauria Cylindracea
''Lauria cylindracea'', the common chrysalis snail, is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Lauriidae. Description The 3-4 x 1.8 mm shell is oval with a blunt apex and 5-6 weakly convex whorls. The last whorl has the largest diameter. The aperture with parietalis and with or without angular tooth. The margin is white, sharp and reflected in fully grown specimens, usually with a whitish parietal callus. The umbilicus is open and narrow. The shell colour is brown, transparent and shiny. It is weakly striated. Juveniles have additional folds visible from outside the shell. The animal is dark with lighter sides and foot. The upper tentacles are short, the lower tentacles very short. The animal crawls with the shell in a high and almost straight position. Distribution This species is known to occur in a number of countries and islands: * Great Britain * Ireland * UkraineBalashov I. & Gural-Sverlova N. 2012. An annotated ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leiostyla
''Leiostyla'' is a genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Lauriidae.Falkner G., Obrdlík P., Castella E. & Speight M. C. D. 2001 ''Shelled Gastropoda of Western Europe''. München: Friedrich-Held-Gesellschaft, 267 pp.MolluscaBase eds. (2021). MolluscaBase. Leiostyla R. T. Lowe, 1852. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=842729 on 2021-04-29 The genus ''Leiostyla'' was previously placed in the subfamily Lauriinae, within the family Pupillidae. Species Species in the genus ''Leiostyla'' include: * '' Leiostyla abbreviata'' (R. T. Lowe, 1852) - also known as Madeiran land snail * '' Leiostyla albina'' (Pilsbry, 1931) * ''Leiostyla anglica'' (A. Férussac, 1821) * '' Leiostyla arborea'' (R. T. Lowe, 1855) * † ''Leiostyla austriaca'' (Wenz, 1921) * '' Leiostyla beatae'' Walther & Hausdorf, 2015 * '' Leiostyla calathiscus'' (R. T. Lowe, 1831) * † ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orthurethra
Orthurethra is a clade of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora. In the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005, Orthurethra is treated as an informal group and subclade of Stylommatophora. In the revised taxonomy of 2017 this taxon is no longer supported and has been replaced by the infraorder Pupilloidei.Bouchet P., Rocroi J.P., Hausdorf B., Kaim A., Kano Y., Nützel A., Parkhaev P., Schrödl M. & Strong E.E. (2017). Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia. 61(1-2): 1-526 Superfamilies and families Superfamilies and families within the clade Orthurethra: (Families that are exclusively fossil are indicated with a dagger †) *Superfamily Pupilloidea * Achatinellidae Gulick, 1873 * Agardhiellidae Harl & Páll-Gergely, 2017 * Amastridae Pilsbry, 1910 * Argnidae Hudec, 1965 * Azecidae H. Watson, 1920 * Cerastidae Wenz, 1923 * Chondrin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stylommatophora
Stylommatophora is an orderPhilippe Bouchet, Jean-Pierre Rocroi, Bernhard Hausdorf, Andrzej Kaim, Yasunori Kano, Alexander Nützel, Pavel Parkhaev, Michael Schrödl and Ellen E. Strong. 2017. Revised Classification, Nomenclator and Typification of Gastropod and Monoplacophoran Families'. Malacologia, 61(1-2): 1-526. of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This taxon includes most land snails and slugs. Stylommatophorans lack an operculum, but some close their shell apertures with temporary "operculum" ( epiphragm) made of calcified mucus. They have two pairs of retractile tentacles, the upper pair of which bears eyes on the tentacle tips. All stylommatophorans are hermaphrodites. The two strong synapomorphies of Stylommatophora are a long pedal gland placed beneath a membrane and two pairs of retractile tentacles. Stylommatophora are known from the Cretaceous period up to the present day. A molecular clock estimate puts the origin of the ... [...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] |
Gastropod Shell
The gastropod shell is part of the body of many gastropods, including snails, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage. Some gastropods appear shell-less (slugs) but may have a remnant within the mantle, or in some cases the shell is reduced such that the body cannot be retracted within it (semi-slug). Some snails also possess an operculum that seals the opening of the shell, known as the Aperture (mollusc), aperture, which provides further protection. The study of mollusc shells is known as conchology. The biological study of gastropods, and other molluscs in general, is malacology. Shell morphology terms vary by species group. Shell layers The gastropod shell has three major layers secreted by the Mantle (mollusc), mantle. The calcareous central layer, ostracum, is typically made of calcium carbonate (CaCO3) precipitated into an organic matrix ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
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 the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Snail
A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial molluscs, terrestrial gastropod mollusks that have gastropod shell, shells (those without shells are known as slugs). However, it is not always easy to say which species are terrestrial, because some are more or less amphibious between land and fresh water, and others are relatively amphibious between land and salt water. Land snails are a Polyphyly, polyphyletic group comprising at least ten independent evolutionary transitions to terrestrial life (the last common ancestor of all gastropods was marine). The majority of land snails are pulmonates that have a lung and breathe air. Most of the non-pulmonate land snails belong to lineages in the Caenogastropoda, and tend to have a gill and an operculum (gastropod), operculum. The largest clade of non-pulmonate land snails is the Cyclophoroidea, with more than 7,0 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clade
In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach to taxonomy adopted by most biological fields. The common ancestor may be an individual, a population, or a species (extinct or Extant taxon, extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed ''monophyletic'' (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming Taxon, taxa that are not clades; that is, taxa that are not Monophyly, monophyletic. Some of the relationships between organisms that the molecul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eupulmonata
Eupulmonata is a taxonomic clade of air-breathing gastropod molluscs. The great majority of this group are land snails and slugs, but some are intertidal or inhabit coastal saltmarshes and mangroves. Possible synapomorphy of the group are globineurons (small cells) in the procerebrum. Eyes positioned on the tips of the tentacles were considered a synapomorphy of a clade named Geophila (Stylommatophora + Systellommatophora), but a 1972 phylogenomic study found strong support for a clade uniting Ellobioidea (eyes at the base of tentacles) and Systelommatopohra (eyes on the tentacle tips). Stalked eyes thus likely evolved twice independently. Taxonomy Source: *Order Ellobiida **Superfamily Ellobioidea L. Pfeiffer, 1854 *** Ellobiidae L. Pfeiffer, 1854 *** Otinidae H. Adams & A. Adams, 1855 *** Trimusculidae J. Q. Burch, 1945 *Order Systellommatophora **Superfamily Onchidioidea Rafinesque, 1815 *** Onchidiidae Rafinesque, 1815 **Superfamily Veronicelloidea Gray, 1840 ***Ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
