|
Cratogeomys
''Cratogeomys'' is a genus of rodent in the family Geomyidae. It was previously considered a subgenus of ''Pappogeomys''. All species are distributed in Mexico and the Southwest United States, with some species being found in both countries. It contains the following seven species: * Yellow-faced pocket gopher (''Cratogeomys castanops'') * Oriental Basin pocket gopher (''Cratogeomys fulvescens'') * Smoky pocket gopher (''Cratogeomys fumosus'') * Goldman's pocket gopher (''Cratogeomys goldmani'') * Merriam's pocket gopher (''Cratogeomys merriami'') * Perote pocket gopher (''Cratogeomys perotensis'') * Volcan de Toluca Pocket Gopher Volcan or Volcán may refer to: Places *Volcán, Panama, town in Panama *Volcán (Jujuy), town in Argentina Other uses *Volcan (mining company), Peruvian mining company *Volcán River, Chile *Volcán Lake, Bolivia People with the surname *Erin V ... (''Cratogeomys planiceps'') References Rodent genera Taxa named by Clinton Hart Merriam [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oriental Basin Pocket Gopher
The Oriental Basin pocket gopher (''Cratogeomys fulvescens'') is a species of pocket gopher which is endemic to Mexico. It was first described in 1895 by Clinton Hart Merriam. It was considered to be a subspecies of Merriam's pocket gopher (''Cratogeomys merriami'') in the late 20th and early 21st century but has been reinstated as its own species. The IUCN Red List has evaluated it to be of least concern. Description ''C. fulvescens'' is mid-sized for the genus ''Cratogeomys'' and exhibits sexual dimorphism in size. Adult males weigh of and adult females weigh . Its fur coloration is "grizzled yellowish-brown" with "a strong mixture of black-tipped hairs"; the underside is paler than the dorsal fur. The cranial width of its skull is typically less than , making it small for the genus. The dental formula is . Each upper incisor has a longitudinal groove along its anterior surface. The total body length is . Distribution This species is endemic to a small region in the southern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cratogeomys
''Cratogeomys'' is a genus of rodent in the family Geomyidae. It was previously considered a subgenus of ''Pappogeomys''. All species are distributed in Mexico and the Southwest United States, with some species being found in both countries. It contains the following seven species: * Yellow-faced pocket gopher (''Cratogeomys castanops'') * Oriental Basin pocket gopher (''Cratogeomys fulvescens'') * Smoky pocket gopher (''Cratogeomys fumosus'') * Goldman's pocket gopher (''Cratogeomys goldmani'') * Merriam's pocket gopher (''Cratogeomys merriami'') * Perote pocket gopher (''Cratogeomys perotensis'') * Volcan de Toluca Pocket Gopher Volcan or Volcán may refer to: Places *Volcán, Panama, town in Panama *Volcán (Jujuy), town in Argentina Other uses *Volcan (mining company), Peruvian mining company *Volcán River, Chile *Volcán Lake, Bolivia People with the surname *Erin V ... (''Cratogeomys planiceps'') References Rodent genera Taxa named by Clinton Hart Merriam [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yellow-faced Pocket Gopher
The yellow-faced pocket gopher (''Cratogeomys castanops'') is a species of pocket gopher that is native to shortgrass prairies in the south-western United States and northern Mexico. It is the species that lives north of the Southern Coahuila Filter-Barrier (SCFB). Among the different species, the yellow-faced pocket gopher has a small to medium-sized skull. The fossil of this genus was recorded from the pre-Pleistocene Benson Beds of Arizona. The yellow-faced pocket gopher has a yellowish-brown coat, a short tail, and one deep groove down the anterior middle of each incisor Incisors (from Latin ''incidere'', "to cut") are the front teeth present in most mammals. They are located in the premaxilla above and on the mandible below. Humans have a total of eight (two on each side, top and bottom). Opossums have 18, whe .... Form and function Adults of ''C. castanops'' in Texas begin to molt in August and continue through March. The new pelage was found to be thicker, but had no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merriam's Pocket Gopher
Merriam's pocket gopher (''Cratogeomys merriami'') is a species of rodent in the family Geomyidae. It is endemic to Mexico, where it is found in the area of the Valley of Mexico and the Valley of Toluca at elevations from 1800 to 4000 m. Its favored habitats are the Zacatonal grassland and temperate pine-oak woodlands, as well as farmland and rangeland. Its karyotype has 2n = 36 and FN = 68. Until 2005, what are now considered the separate species '' C. fulvescens'' and '' C. perotensis'' were included within this taxon. They were split off due to clear molecular, chromosomal and morphological differences. All three species are part of the '' C. castanops'' species group. The species is named after American mammalogist Clinton Hart Merriam. Although its distribution is patchy, it is not thought to be threatened. References Merriam's pocket gopher Endemic mammals of Mexico Fauna of the Trans-Mexican Volcanic Belt Fauna of Central Mexico Natural history of the State ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smoky Pocket Gopher
The smoky pocket gopher (''Cratogeomys fumosus'') is a species of rodent in the family Geomyidae. It is endemic to Mexico (Querétaro). Its natural habitat is subtropical or tropical dry lowland grassland. Molecular phylogenetics Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ... has revealed that this species also includes the animals formerly separated as ''C. gymnurus'', ''C. neglectus'', ''C. tylorhinus'' and ''C. zinseri''. Sources Cratogeomys Endemic mammals of Mexico Natural history of Querétaro Endangered biota of Mexico Mammals described in 1892 Taxonomy articles created by Polbot {{Geomyidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goldman's Pocket Gopher
Goldman's pocket gopher, (''Cratogeomys goldmani'') is a species of rodent in the pocket gopher family. It is distributed throughout northern 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 .... Subspecies There are currently seven identified subspecies of ''Cratogeomys goldmani'': * ''C. g. elibatus'' * ''C. g. goldmani'' * ''C. g. maculats'' * ''C. g. peridoneus'' * ''C. g. planifrons'' * ''C. g. rubellus'' * ''C. g. subnubilus'' References Further reading Cratogeomys Mammals described in 1895 Taxa named by Clinton Hart Merriam {{Geomyidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perote Pocket Gopher
The Perote pocket gopher (''Cratogeomys perotensis''), or Cofre de Perote pocket gopher, is a species of pocket gopher in the family Geomyidae. Range Endemic to Mexico, it is found in the mountains from southern Hildalgo south through Puebla and Veracruz to the volcanic edifices of Cofre de Perote and Pico de Orizaba, the former being the type locality. Description This rodent is light to dark brown in color and weighs 400 to 650 g, with males being slightly larger. There are usually small white areas near the base of the tail. Its karyotype has 2n = 38 and FN = 72. Habitat It inhabits Zacatonal grassland and temperate pine-oak woodlands at elevations from 2400 to 4000 m. Taxonomic history Initially described as a species in 1895, ''C. perotensis'' was demoted to a subspecies of '' C. merriami'' in 1968. In 2005 it was split off again when found to be distinct in molecular, chromosomal and morphological characters. It subsumes the previously proposed taxa ''C. estor'' (Me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clinton Hart Merriam
Clinton Hart Merriam (December 5, 1855 – March 19, 1942) was an American zoologist, mammalogist, ornithologist, entomologist, ecologist, ethnographer, geographer, naturalist and physician. He was commonly known as the 'father of mammalogy', a branch of zoology referring to the study of mammals. Early life Clinton Hart Merriam was born in New York City in 1855 to Clinton Levi Merriam, a U.S. congressman, and Caroline Hart, a judge's daughter and a graduate of Rutgers Institute. The name Clinton, shared by both father and son, was in honor of New York governor DeWitt Clinton, whom the Merriam family had connections with. To avoid confusion, the younger Merriam went by his first initial combined with his middle name, his mother's maiden name, and thus often appears as C. Hart Merriam in both the literature of his time and thereafter. Although born in New York City, where his parents were staying the winter, the family home and place where Merriam spent his boyhood days was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oldfield Thomas
Michael Rogers Oldfield Thomas (21 February 1858 – 16 June 1929) was a British zoologist. Career Thomas worked at the Natural History Museum on mammals, describing about 2,000 new species and subspecies for the first time. He was appointed to the museum secretary's office in 1876, transferring to the zoological department in 1878. In 1891, Thomas married Mary Kane, daughter of Sir Andrew Clark, heiress to a small fortune, which gave him the finances to hire mammal collectors and present their specimens to the museum. He also did field work himself in Western Europe and South America. His wife shared his interest in natural history, and accompanied him on collecting trips. In 1896, when William Henry Flower took control of the department, he hired Richard Lydekker Richard Lydekker (; 25 July 1849 – 16 April 1915) was an English naturalist, geologist and writer of numerous books on natural history. Biography Richard Lydekker was born at Tavistock Square in London. ... [...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] |
Rodent
Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are native to all major land masses except for New Zealand, Antarctica, and several oceanic islands, though they have subsequently been introduced to most of these land masses by human activity. Rodents are extremely diverse in their ecology and lifestyles and can be found in almost every terrestrial habitat, including human-made environments. Species can be arboreal, fossorial (burrowing), saltatorial/richochetal (leaping on their hind legs), or semiaquatic. However, all rodents share several morphological features, including having only a single upper and lower pair of ever-growing incisors. Well-known rodents include mice, rats, squirrels, prairie dogs, porcupines, beavers, guinea pigs, and hamsters. Rabbits, hares, and pikas, whose i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
