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Phenacomyini
Phenacomyini is a tribe of voles in the subfamily Arvicolinae. It contains five species in two genera, all of which are found in North America. Species in this tribe are: * Genus '' Arborimus'' - tree voles ** White-footed vole, ''A. albipes'' ** Red tree vole, ''A. longicaudus'' ** Sonoma tree vole, ''A. pomo'' * Genus '' Phenacomys'' - heather voles ** Western heather vole, ''P. intermedius'' ** Eastern heather vole, ''P. ungava'' The fossil taxa '' Hibbardomys'' and '' Paraphenacomys'' likely also belong to this tribe. The phylogenetic affinities of this tribe have been disputed; some authors have classified them as belonging in the same clade as Arvicolini and Myodini, while others ally them with the otherwise Arctic tribe Dicrostonychini Dicrostonychini is a tribe of lemmings in the subfamily Arvicolinae The Arvicolinae are a subfamily of rodents that includes the voles, lemmings, and muskrats. They are most closely related to the other subfamilies in the Cricetida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vole
Voles are small rodents that are relatives of lemmings and hamsters, but with a stouter body; a longer, hairy tail; a slightly rounder head; smaller eyes and ears; and differently formed molars (high-crowned with angular cusps instead of low-crowned with rounded cusps). They are sometimes known as meadow mice or field mice in North America. Vole species form the subfamily Arvicolinae with the lemmings and the muskrats. There are approximately 155 different vole species. Description Voles are small rodents that grow to , depending on the species. Females can have five to ten litters per year, though with an average lifespan of three months and requiring one month to adulthood, two litters is the norm. Gestation lasts for three weeks and the young voles reach sexual maturity in a month. As a result of this biological exponential growth, vole populations can grow very large within a short time. A mating pair can produce a hundred more voles in a year. Voles outwardly resemble s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voles And Lemmings
The Arvicolinae are a subfamily of rodents that includes the voles, lemmings, and muskrats. They are most closely related to the other subfamilies in the Cricetidae (comprising the hamsters and New World rats and mice). Some authorities place the subfamily Arvicolinae in the family Muridae along with all other members of the superfamily Muroidea. Some refer to the subfamily as the Microtinae (yielding the adjective "microtine") or rank the taxon as a full family, the Arvicolidae. The Arvicolinae are the most populous group of Rodentia in the Northern Hemisphere. They often are found in fossil occlusions of bones cached by past predators such as owls and other birds of prey. Fossils of this group are often used for biostratigraphic dating of paleontological and archeological sites in North America and Europe. Description The most convenient distinguishing feature of the Arvicolinae is the nature of their molar teeth, which have prismatic cusps in the shape of alternating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dicrostonychini
Dicrostonychini is a tribe of lemmings in the subfamily Arvicolinae. It contains only one extant genus, as well as one extinct genus. A 2021 study found Dicrostonychini to also include the genera previously placed in the tribe Phenacomyini, and found this combined Dicrostonychini to be the sister group to the muskrats (tribe Ondatrini Ondatrini is a tribe of semiaquatic rodents in the family Arvicolinae. They are known as muskrats. They are related to voles and lemmings. Classification It contains two extant species, each in their own genus, both of which are native to North ...). References Voles and lemmings Taxa named by Miklós Kretzoi Mammal tribes {{arvicolinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arvicolinae
The Arvicolinae are a subfamily of rodents that includes the voles, lemmings, and muskrats. They are most closely related to the other subfamilies in the Cricetidae (comprising the hamsters and New World rats and mice). Some authorities place the subfamily Arvicolinae in the family Muridae along with all other members of the superfamily Muroidea. Some refer to the subfamily as the Microtinae (yielding the adjective "microtine") or rank the taxon as a full family, the Arvicolidae. The Arvicolinae are the most populous group of Rodentia in the Northern Hemisphere. They often are found in fossil occlusions of bones cached by past predators such as owls and other birds of prey. Fossils of this group are often used for biostratigraphic dating of paleontological and archeological sites in North America and Europe. Description The most convenient distinguishing feature of the Arvicolinae is the nature of their molar teeth, which have prismatic cusps in the shape of alternati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Heather Vole
The eastern heather vole, (''Phenacomys ungava''), is a small North American vole. Until recently, this species was considered to belong to the same species as the western heather vole, ''Phenacomys intermedius''. It is also called the Ungava vole. Though some studies have indicated that ''Phenacomys ungava'' is "rare" or "uncommon," other researchers have found that the animal can be common locally, and others have suggested that the population may undergo cyclic abundance. Description Eastern heather voles are relatively small among vole species, measuring from nose to tail and weighing between . They are very similar in appearance to the western heather vole, and can only be distinguished from them by subtle features of the coat color and the shape of the skull. The fur is long and soft. The coat is brownish with a slight yellowish wash over the back and head, with pale grey underparts and feet, and brighter, almost russet, fur on the rump and flanks. The face and snout of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctic
The Arctic ( or ) is a polar regions of Earth, polar region located at the northernmost part of Earth. The Arctic consists of the Arctic Ocean, adjacent seas, and parts of Canada (Yukon, Northwest Territories, Nunavut), Danish Realm (Greenland), Finland, Iceland, Norway, Russia (Murmansk Oblast, Murmansk, Siberia, Nenets Autonomous Okrug, Nenets Okrug, Novaya Zemlya), Sweden and the United States (Alaska). Land within the Arctic region has seasonally varying snow and sea ice, ice cover, with predominantly treeless permafrost (permanently frozen underground ice) containing tundra. Arctic seas contain seasonal sea ice in many places. The Arctic region is a unique area among Earth's ecosystems. The cultures in the region and the Arctic indigenous peoples have adapted to its cold and extreme conditions. Life in the Arctic includes zooplankton and phytoplankton, fish and marine mammals, birds, land animals, plants and human societies. Arctic land is bordered by the subarctic. De ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myodini
The Myodini are a tribe of forest voles in the subfamily Arvicolinae. Species in this tribe are: *Tribe Myodini **Genus ''Alticola'' - voles from Central Asia ***Subgenus ''Alticola'' **** White-tailed mountain vole, ''A. albicauda'' **** Silver mountain vole, ''A. argentatus'' **** Gobi Altai mountain vole, ''A. barakshin'' **** Central Kashmir vole, ''A. montosa'' **** Royle's mountain vole, ''A. roylei'' **** Mongolian silver vole, ''A. semicanus'' **** Stolička's mountain vole, ''A. stoliczkanus'' ****Tuva silver vole, ''A. tuvinicus'' ***Subgenus ''Aschizomys'' ****Lemming vole, ''A. lemminus'' **** Large-eared vole, ''A. macrotis'' **** Lake Baikal mountain vole, ''A. olchonensis'' ***Subgenus ''Platycranius'' **** Flat-headed vole, A. strelzowi'' **Genus ''Caryomys'' ***Ganzu vole, ''C. eva'' ***Kolan vole, ''C. inez'' **Genus ''Eothenomys'' - voles from East Asia ***Kachin red-backed vole, ''E. cachinus'' ***Pratt's vole, ''E. chinensis'' ***Southwest China vole, ''E. cus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arvicolini
Arvicolini is a tribe of voles in the subfamily Arvicolinae. A 2021 study found that ''Arvicola'' may not belong in this group, instead being sister to the tribe Lagurini. List of species Tribe Arvicolini *Genus ''Arvicola'' - water voles ** European (or Northern) water vole, ''Arvicola amphibius (Arvicola terrestris)'' ** Southwestern (or Southern) water vole, ''Arvicola sapidus'' **Montane water vole, ''Arvicola scherman'' *Genus '' Blanfordimys'' **Afghan vole, ''Blanfordimys afghanus'' ** Bucharian vole, ''Blanfordimys bucharicus'' *Genus ''Chionomys'' - snow voles ** Caucasian snow vole, ''Chionomys gud'' ** European snow vole, ''Chionomys nivalis'' **Robert's snow vole, ''Chionomys roberti'' *Genus '' Lasiopodomys'' ** Brandt's vole, ''Lasiopodomys brandtii'' ** Plateau vole, ''Lasiopodomys fuscus'' ** Mandarin vole, ''Lasiopodomys mandarinus'' *Genus ''Lemmiscus'' ** Sagebrush vole, ''Lemmiscus curtatus'' *Genus ''Microtus'' - voles ** Insular vole, ''Microtus abbreviatus' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek grc, label=none, πλεῖστος, pleīstos, most and grc, label=none, καινός, kainós (latinized as ), 'new'. At the end of the preceding Pliocene, the previously isolated North and South American continents were joined by the Isthmus of Panama, causing Great American Interchang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Heather Vole
The western heather vole (''Phenacomys intermedius'') is a small vole found in western North America. Until recently, the eastern heather vole, (''Phenacomys ungava''), was considered to be a subspecies. They have short ears with stiff orange hair inside and a short thin tail which is paler underneath. Their long soft fur is brownish with silver grey underparts. They are roughly long with a tail length shorter than one-half their body length, approximately . They weigh about . Distribution and habitat Western heather voles are found in alpine meadows, open shrubby areas, dry forests with shrubs below to provide cover and tundra regions, usually near water, in British Columbia, the Yukon and the western United States. In summer, they live in underground burrows where they make nests of grasses and small foliage. These nests are usually near the surface, above 20 cm from the ground, and after often underneath objects such as rocks and logs. In winter, they tunnel under the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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