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Plegma
''Plegma'' is a genus of minute, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Helicarionidae Helicarionidae is a family of air-breathing land snails or semi-slugs, terrestrial pulmonate gastropod mollusks in the superfamily Helicarionoidea. Distribution The distribution of Helicarionidae includes the eastern Palearctic, Malagasy, .... Species Species within the genus ''Plegma'' include: * '' Plegma caelatura'' (Férussac, 1821) * '' Plegma duponti'' (Morelet, 1866) References Helicarionidae Gastropods described in 1911 {{Helicarionidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helicarionidae
Helicarionidae is a family of air-breathing land snails or semi-slugs, terrestrial pulmonate gastropod mollusks in the superfamily Helicarionoidea. Distribution The distribution of Helicarionidae includes the eastern Palearctic, Malagasy, India, south-eastern Asia, Hawaii, and Australia. Anatomy Species of snails within this family make and use love darts made of chitin. In this family, the number of haploid chromosomes lies between 21 and 30 (according to the values in this table). Taxonomy The family Helicarionidae is nested within the limacoid clade, as shown in the following cladogram :Hausdorf B. (2000). "Biogeography of the Limacoidea sensu lato (Gastropoda: Stylommatophora): Vicariance Events and Long-Distance Dispersal". '' Journal of Biogeography'' 27(2): 379-390. JSTOR Genera The following genera are recognised in the family Helicarionidae: ;Subfamily Helicarioninae *'' Amenixesta'' *'' Antiquarion'' *'' Attenborougharion'' *'' Bathia'' *'' Brevisent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerard Pierre Laurent Kalshoven Gude
Gerard Pierre Laurent Kalshoven Gude (1858 in Amsterdam – 8 November 1924)Bernard Barham Woodward, Woodward B. B. (1925). " GERARD PIERRE LAURENT KALSHOVEN GUDE, F.Z.S., ETC. 1858–1924". ''Proceedings of the Malacological Society of London'' 16(5): 205-206. was a malacologist from the United Kingdom. He joined the Conchological Society of Great Britain in 1890. He was elected as a fellow of the Zoological Society of London in 1884. Bibliography He published malacological works since 1893. Among his works belongs two volumes of ''The Fauna of British India, Including Ceylon and Burma''. * Gude G. K. (1896)''Armature of helicoid landshells'' Science-Gossip ''Science-Gossip'' 29(23): 88-92, 126-128, 154-156, 178-181, 204-207, 244-246, 274-276, 300-302, 10-11, 36-37, 70-71, 102-103, 138-139, 170-171, 231-232, 263-264, 284-285, 15-17, 74-76, 114-115, 133-134, 170-172, 239-240, 332-333, 15-17, 75-77, 147-149, 174-177. - description of ''Plectopylis'' - type genus of Plectopylid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proceedings Of The Malacological Society Of London
The ''Journal of Molluscan Studies'' is the peer-reviewed scientific journal of the Malacological Society of London, covering research in malacology.About the journal accessed 6 December 2010. The editor-in-chief is Dinarzarde C. Raheem. Previous names of this journal include ''Proceedings of the Malacological Society'', and ''Proceedings of the Malacological Society of London'' (abbreviated as ''Proc. Malacol. Soc. Lond.''). Abstracting and indexing The journal is abstracted and indexed by |
Louis Germain
Alfred Louis Pierre Germain (8 January 1878 – 18 October 1942) was a French malacologist born in Niort, department Deux-Sèvres. He studied in Angers and Paris, obtaining his doctorate of sciences in 1907. Later he worked under Louis Joubin in the laboratory of mollusks, worms and zoophytes at the Muséum national d'histoire naturelle in Paris. From 1936 to 1942, he was director of the museum. Recently (2010), a new genus of freshwater mussels from Madagascar called ''Germainaia'' was introduced into science. Written works * ''Étude sur les mollusques terrestres et fluviatiles vivants des environs d'Angers et du département de Maine-et-Loire'', Bulletin of the Society of Natural Sciences of Western France, 1903 – Study of terrestrial and fluviatile mollusks living in the vicinity of Angers and the department of Maine-et-Loire. * ''Les mollusques terrestres & fluviatiles de l'Afrique centrale française'', 1907 - Terrestrial and fluviatile mollusks of French central A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Pfeiffer
Ludwig Karl Georg Pfeiffer, also known as Louis Pfeiffer (4 July 1805 – 2 October 1877), was a German physician, botanist and conchologist. Early life, education and medical career Pfeiffer was born in Cassel, the eldest son of the jurist Burkhard Wilhelm Pfeiffer and his wife Louise (née Harnier). Pfeiffer received his primary education in the Cassel Lyceum, where he distinguished himself academically, and by the age of fifteen was already at the top of his class. In 1820, political tensions forced his father to relocate the family to Lübeck, but Louis continued to excel, reaching the top of his class there as well. At the age of sixteen, Pfeiffer entered into university to study medicine, first at the University of Göttingen, and finally at the University of Marburg, where he studied under such prominent scientists as Georg Wilhelm Franz Wenderoth and Ernst Daniel August Bartels, graduating in 1825. He spent the next year in Paris and Berlin, continuing his education, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...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] |
Terrestrial Animal
Terrestrial animals are animals that live predominantly or entirely on land (e.g. cats, chickens, ants, most spiders), as compared with aquatic animals, which live predominantly or entirely in the water (e.g. fish, lobsters, octopuses), and semiaquatic animals, which rely on both aquatic and terrestrial habitats (e.g. platypus, most amphibians). 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. Alternatively, terrestrial is used to describe animals that live on the ground, as opposed to arboreal animals that live in trees. Ecological subgroups The term "terrestrial" is typically applied to species that live primarily on or in the ground, in contrast to arboreal species, who live primarily in trees, even though the latter are actually a specialized subgroup of the terre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pulmonate
Pulmonata or pulmonates is an informal group (previously an order, and before that, a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includes many land and freshwater families, and several marine families. The taxon Pulmonata as traditionally defined was found to be polyphyletic in a molecular study per Jörger ''et al.'', dating from 2010. Pulmonata are known from the Carboniferous period to the present. Pulmonates have a single atrium and kidney, and a concentrated symmetrical nervous system. The mantle cavity is on the right side of the body, and lacks gills, instead being converted into a vascularised lung. Most species have a shell, but no operculum, although the group does also include several shell-less slugs. Pulmonates are hermaphroditic, and some groups possess love darts. Linnean taxonomy The taxonomy of this group according to the taxonomy of the Gastrop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod
Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and from the land. There are many thousands of species of sea snails and sea slug, slugs, as well as freshwater snails, freshwater limpets, land snails and slugs. The class Gastropoda is a diverse and highly successful class of mollusks within the phylum Mollusca. It 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 Furongian, Late Cambrian. , 721 family (taxonomy), families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently neontology, extant living fossil, with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
