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Giffordius Pinchotii
''Giffordius'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Polygyridae. The two known species, found on Isla de Providencia (or Old Providence), were named after the early conservationist and politician, Gifford Pinchot and his wife, Cornelia, whose expedition discovered them. These snails are unusual among polygyrids in being ovoviviparous rather than oviparous.Pilsbry H. A. (1940). "Land Mollusca of North America (North of Mexico)". ''Acad. Nat. Sci. Philadelphia'', Monograph 3, 1(2): 577. Species The genus ''Giffordius'' contains the following species: * '' Giffordius corneliae'' * '' Giffordius pinchotii'' See also *Pinchot South Sea Expedition The Pinchot South Sea Expedition was a 1929 zoological expedition to the Caribbean and South Pacific led and financed by Gifford Pinchot. Itinerary and personnel The expedition departed from New York City on 31 March 1929 aboard the Pinchots' yacht ... References Polygyri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animalia
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have 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 bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echinode ... [...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 gastropod mollusks that have 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 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. The largest clade of land snails is the Cyclophoroidea, with more than 7,000 species. Many of these operculate land snails live in habitats or microhabitats ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giffordius Pinchotii
''Giffordius'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Polygyridae. The two known species, found on Isla de Providencia (or Old Providence), were named after the early conservationist and politician, Gifford Pinchot and his wife, Cornelia, whose expedition discovered them. These snails are unusual among polygyrids in being ovoviviparous rather than oviparous.Pilsbry H. A. (1940). "Land Mollusca of North America (North of Mexico)". ''Acad. Nat. Sci. Philadelphia'', Monograph 3, 1(2): 577. Species The genus ''Giffordius'' contains the following species: * '' Giffordius corneliae'' * '' Giffordius pinchotii'' See also *Pinchot South Sea Expedition The Pinchot South Sea Expedition was a 1929 zoological expedition to the Caribbean and South Pacific led and financed by Gifford Pinchot. Itinerary and personnel The expedition departed from New York City on 31 March 1929 aboard the Pinchots' yacht ... References Polygyri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giffordius Corneliae
''Giffordius'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Polygyridae. The two known species, found on Isla de Providencia (or Old Providence), were named after the early conservationist and politician, Gifford Pinchot and his wife, Cornelia, whose expedition discovered them. These snails are unusual among polygyrids in being ovoviviparous rather than oviparous.Pilsbry H. A. (1940). "Land Mollusca of North America (North of Mexico)". ''Acad. Nat. Sci. Philadelphia'', Monograph 3, 1(2): 577. Species The genus ''Giffordius'' contains the following species: * '' Giffordius corneliae'' * ''Giffordius pinchotii'' See also *Pinchot South Sea Expedition The Pinchot South Sea Expedition was a 1929 zoological expedition to the Caribbean and South Pacific led and financed by Gifford Pinchot. Itinerary and personnel The expedition departed from New York City on 31 March 1929 aboard the Pinchots' yacht ... References Polygyrid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oviparous
Oviparous animals are animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive method of most fish, amphibians, most reptiles, and all pterosaurs, dinosaurs (including birds), and monotremes. In traditional usage, most insects (one being ''Culex pipiens'', or the common house mosquito), molluscs, and arachnids are also described as oviparous. Modes of reproduction The traditional modes of reproduction include oviparity, taken to be the ancestral condition, traditionally where either unfertilised oocytes or fertilised eggs are spawned, and viviparity traditionally including any mechanism where young are born live, or where the development of the young is supported by either parent in or on any part of their body. However, the biologist Thierry Lodé recently divided the traditional category of oviparous reproduction into two modes that he named ovuliparity and (true) oviparity respectively. He distinguished the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovoviviparous
Ovoviviparity, ovovivipary, ovivipary, or aplacental viviparity is a term used as a "bridging" form of reproduction between egg-laying oviparous and live-bearing viviparous reproduction. Ovoviviparous animals possess embryos that develop inside eggs that remain in the mother's body until they are ready to hatch. The young of some ovoviviparous amphibians, such as ''Limnonectes larvaepartus'', are born as larvae, and undergo further metamorphosis outside the body of the mother. Members of genera ''Nectophrynoides'' and ''Eleutherodactylus'' bear froglets, not only the hatching, but all the most conspicuous metamorphosis, being completed inside the body of the mother before birth. Among insects that depend on opportunistic exploitation of transient food sources, such as many Sarcophagidae and other carrion flies, and species such as many Calliphoridae, that rely on fresh dung, and parasitoids such as tachinid flies that depend on entering the host as soon as possible, the emb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gifford Pinchot
Gifford Pinchot (August 11, 1865October 4, 1946) was an American forester and politician. He served as the fourth chief of the U.S. Division of Forestry, as the first head of the United States Forest Service, and as the 28th governor of Pennsylvania. He was a member of the Republican Party for most of his life, though he joined the Progressive Party for a brief period. Born into the wealthy Pinchot family, Gifford Pinchot embarked on a career in forestry after graduating from Yale University in 1889. President William McKinley appointed Pinchot as the head of the Division of Forestry in 1898, and Pinchot became the first chief of the U.S. Forest Service after it was established in 1905. Pinchot enjoyed a close relationship with President Theodore Roosevelt, who shared Pinchot's views regarding the importance of conservation. After William Howard Taft succeeded Roosevelt as president, Pinchot was at the center of the Pinchot–Ballinger controversy, a dispute with Secretary of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isla De Providencia
Isla de Providencia, historically Old Providence, and generally known as Providencia, is a mountainous Caribbean island that is part of the Colombian department of Archipelago of San Andrés, Providencia and Santa Catalina and the municipality of Providencia and Santa Catalina Islands, lying midway between Costa Rica and Jamaica. Providencia's maximum elevation is above sea level. The smaller Santa Catalina Island to the northwest is connected by a footbridge to its larger sister Providencia Island. Providencia Island has an area of ; the two islands cover an area of and form the municipality of Santa Isabel, which had a population of 4,927 at the Census of 2005. The island is served by El Embrujo Airport, which the Colombian Government plans to expand in order to take international flights. The island was the site of an English Puritan colony established in 1629 by the Providence Island Company, and was taken by Spain in 1641. The pirate Henry Morgan used Providencia as ... [...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] |
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 located 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 Ga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
