|
Otospermophilus
''Otospermophilus'' is a genus of ground squirrels in the family Sciuridae, containing three species from Mexico and the United States. ''Otospermophilus'' was formerly placed in the large ground squirrel genus ''Spermophilus'', as a subgenus or species group. Since DNA sequencing of the cytochrome ''b'' gene has shown ''Spermophilus'' to be paraphyletic to the prairie dogs and marmots, it is now separated, along with six other genera. Species The three species in ''Otospermophilus'' are listed below. These are the same species that were previously grouped in the subgenus ''Otospermophilus''. :* Rock squirrel, ''Otospermophilus variegatus'' :* California ground squirrel, ''Otospermophilus beecheyi'' :* Baja California rock squirrel The Baja California rock squirrel (''Otospermophilus atricapillus'') is a species of rodent in the family Sciuridae. It is endemic to Baja California Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otospermophilus
''Otospermophilus'' is a genus of ground squirrels in the family Sciuridae, containing three species from Mexico and the United States. ''Otospermophilus'' was formerly placed in the large ground squirrel genus ''Spermophilus'', as a subgenus or species group. Since DNA sequencing of the cytochrome ''b'' gene has shown ''Spermophilus'' to be paraphyletic to the prairie dogs and marmots, it is now separated, along with six other genera. Species The three species in ''Otospermophilus'' are listed below. These are the same species that were previously grouped in the subgenus ''Otospermophilus''. :* Rock squirrel, ''Otospermophilus variegatus'' :* California ground squirrel, ''Otospermophilus beecheyi'' :* Baja California rock squirrel The Baja California rock squirrel (''Otospermophilus atricapillus'') is a species of rodent in the family Sciuridae. It is endemic to Baja California Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Ground Squirrel
The California ground squirrel (''Otospermophilus beecheyi''), also known as the Beechey ground squirrel, is a common and easily observed ground squirrel of the western United States and the Baja California Peninsula; it is common in Oregon and California and its range has relatively recently extended into Washington and northwestern Nevada. Formerly placed in ''Spermophilus'', as ''Spermophilus beecheyi'', it was reclassified in ''Otospermophilus'' in 2009, as it became clear that ''Spermophilus'' as previously defined was not a natural (monophyletic) group. A full species account was published for this species in 2016. Etymology John Richardson, who originally described the species as ''Arctomys (Spermophilus) beecheyi'', or "Beechey's marmot", named it after Frederick William Beechey, an early 19th-century British explorer and naval officer. Description The squirrel's upper parts are mottled, with the fur containing a mixture of gray, light brown and dusky hairs. The shoul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock Squirrel
The rock squirrel (''Otospermophilus variegatus'') is a species of rodent in the family Sciuridae and is native to Mexico and the Southwestern United States, including southern Nevada, Utah, Colorado, Arizona, New Mexico, West Texas, and the panhandle of Oklahoma.{{Cite web, url=https://animaldiversity.org/accounts/Spermophilus_variegatus/, title="Spermophilus variegatus rock squirrel", last=Langstaff, first=Lucas, website=nhpbs.org, access-date=2019-10-11 Characteristics Rock squirrels are one of the largest members of the family Sciuridae, with adults measuring up to 21 inches (53 cm) in length. In front and on top, the squirrel's coat is a speckled grayish brown; on the rear and bottom, the gray becomes a more mottled brownish-black tone. They have a marked light-colored ring around their eyes and pointed ears that project well above their heads. Rock squirrels have a long, bushy tail with white edges. Life history/behavior The female rock squirrel has two litters a y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baja California Rock Squirrel
The Baja California rock squirrel (''Otospermophilus atricapillus'') is a species of rodent in the family Sciuridae. It is endemic to Baja California, Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema .... References Otospermophilus Rodents of North America Endemic mammals of Mexico Endemic fauna of the Baja California Peninsula Mammals described in 1889 Taxa named by Walter E. Bryant Taxonomy articles created by Polbot Taxobox binomials not recognized by IUCN {{ground-squirrel-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Squirrel
Ground squirrels are members of the squirrel family of rodents (Sciuridae), which generally live on or in the ground, rather than trees. The term is most often used for the medium-sized ground squirrels, as the larger ones are more commonly known as marmots (genus ''Marmota'') or prairie dogs, while the smaller and less bushy-tailed ground squirrels tend to be known as chipmunks (genus ''Tamias''). Together, they make up the "marmot tribe" of squirrels, Marmotini, a division within the large and mainly ground squirrel subfamily Xerinae, and containing six living genera. Well-known members of this largely Holarctic group are the marmots (''Marmota''), including the American groundhog, the chipmunks, the susliks (''Spermophilus''), and the prairie dogs (''Cynomys''). They are highly variable in size and habitus, but most are remarkably able to rise up on their hind legs and stand fully erect comfortably for prolonged periods. They also tend to be far more gregarious than other sq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spermophilus
''Spermophilus'' is a genus of ground squirrels in the Sciuridae, squirrel family. As traditionally defined the genus was very species-rich, ranging through Europe, Asia and North America, but this arrangement was found to be paraphyletic to the certainly distinct prairie dogs, marmots, and antelope squirrels. As a consequence, all the former ''Spermophilus'' species of North America have been moved to other genera, leaving the European and Asian species as true ''Spermophilus'' (the only exceptions are two Asian ''Urocitellus''). Some species are sometimes called susliks (or sousliks). This name comes from Russian :ru:Суслики, суслик, ''suslik''. In some languages, a derivative of the name is in common usage, for example ''suseł'' in Polish. The scientific name of this genus means "seed-lovers" (gr. σπέρμα ''sperma'', genitive σπέρματος ''spermatos'' – seed; φίλος ''philos'' – friend, lover). Habitat and behavior As typical ground squirr ... [...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] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sciuridae
Squirrels are members of the family Sciuridae, a family that includes small or medium-size rodents. The squirrel family includes tree squirrels, ground squirrels (including chipmunks and prairie dogs, among others), and flying squirrels. Squirrels are indigenous to the Americas, Eurasia, and Africa, and were introduced by humans to Australia. The earliest known fossilized squirrels date from the Eocene epoch, and among other living rodent families, the squirrels are most closely related to the mountain beaver and to the dormice. Etymology The word ''squirrel'', first attested in 1327, comes from the Anglo-Norman which is from the Old French , the reflex of a Latin word , which was taken from the Ancient Greek word (; from ) 'shadow-tailed', referring to the long bushy tail which many of its members have. The native Old English word for the squirrel, , survived only into Middle English (as ) before being replaced. The Old English word is of Common Germanic origin, cognat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grand Canyon
The Grand Canyon (, yuf-x-yav, Wi:kaʼi:la, , Southern Paiute language: Paxa’uipi, ) is a steep-sided canyon carved by the Colorado River in Arizona, United States. The Grand Canyon is long, up to wide and attains a depth of over a mile (). The canyon and adjacent rim are contained within Grand Canyon National Park, the Kaibab National Forest, Grand Canyon–Parashant National Monument, the Hualapai Indian Reservation, the Havasupai Indian Reservation and the Navajo Nation. President Theodore Roosevelt was a major proponent of the preservation of the Grand Canyon area and visited it on numerous occasions to hunt and enjoy the scenery. Nearly two billion years of Earth's geological history have been exposed as the Colorado River and its tributaries cut their channels through layer after layer of rock while the Colorado Plateau was uplifted. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subgenus
In biology, a subgenus (plural: subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between the generic name and the specific epithet: e.g. the tiger cowry of the Indo-Pacific, ''Cypraea'' (''Cypraea'') ''tigris'' Linnaeus, which belongs to the subgenus ''Cypraea'' of the genus ''Cypraea''. However, it is not mandatory, or even customary, when giving the name of a species, to include the subgeneric name. In the International Code of Nomenclature for algae, fungi, and plants (ICNafp), the subgenus is one of the possible subdivisions of a genus. There is no limit to the number of divisions that are permitted within a genus by adding the prefix "sub-" or in other ways as long as no confusion can result. Article 4 The secondary ranks of section and series are subordinate to subgenus. An example is ''Banksia'' subg. ''Isostylis'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DNA Sequencing
DNA sequencing is the process of determining the nucleic acid sequence – the order of nucleotides in DNA. It includes any method or technology that is used to determine the order of the four bases: adenine, guanine, cytosine, and thymine. The advent of rapid DNA sequencing methods has greatly accelerated biological and medical research and discovery. Knowledge of DNA sequences has become indispensable for basic biological research, DNA Genographic Projects and in numerous applied fields such as medical diagnosis, biotechnology, forensic biology, virology and biological systematics. Comparing healthy and mutated DNA sequences can diagnose different diseases including various cancers, characterize antibody repertoire, and can be used to guide patient treatment. Having a quick way to sequence DNA allows for faster and more individualized medical care to be administered, and for more organisms to be identified and cataloged. The rapid speed of sequencing attained with modern D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Spermophilus")
