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Rocky Mountain Toad
The Rocky Mountain toad or western Woodhouse's toad (''Anaxyrus woodhousii woodhousii'') is a subspecies in the Woodhouse's toad subgroup. It can be identified by its light middorsal stripe, prominent cranial crests, and elongate parotoid glands. The belly is usually white or yellowish with dark flecks between the forelegs Conant, Roger & Collins, Joseph T (1998). Reptiles and amphibians of eastern and central North America. New York: Houghton Mifflin. Range and habitat This abundant amphibian ranges from the Dakotas and Montana to central Texas, then west of the Rocky Mts. from northern Utah to Central Arizona. Disjunct colonies can be found in several states. It inhabits marshes, swales, river bottoms, canyons, desert streams, irrigated areas, and suburban backyards. Nocturnal, it usually approaches lit areas where insects can easily be found. See also *''Anaxyrus woodhousii'' References * External links Images from Californiaherps.com Rocky Mountain Toad, Rocky Mounta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Frédéric Girard
Charles Frédéric Girard (8 March 1822 – 29 January 1895) was a French biologist specializing in ichthyology and herpetology. Born in Mulhouse, France, he studied at the College of Neuchâtel, Switzerland, as a student of Louis Agassiz. In 1847, he accompanied Agassiz as his assistant to Harvard University. Three years later, Spencer Fullerton Baird called him to the Smithsonian Institution to work on its growing collection of North American reptiles, amphibians and fishes. He worked at the museum for the next ten years and published numerous papers, many in collaboration with Baird. In 1854, he was naturalized as a U.S. citizen. Besides his work at the Smithsonian, he managed to earn an M.D. from Georgetown University in Washington, D.C. in 1856. In 1859 he returned to France and was awarded the Cuvier Prize by the Institute of France for his work on the North American reptiles and fishes two years later. When the American Civil War broke out, he joined the Confederate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific ranks, such as variety, may be named. In bacteriology and virology, under standard bacterial nomenclature and virus nomenclature, there are recommendations but not strict requirements for recognizing other important infraspecific ranks. A taxonomist decides whether ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subgroup
In group theory, a branch of mathematics, given a group ''G'' under a binary operation ∗, a subset ''H'' of ''G'' is called a subgroup of ''G'' if ''H'' also forms a group under the operation ∗. More precisely, ''H'' is a subgroup of ''G'' if the restriction of ∗ to is a group operation on ''H''. This is often denoted , read as "''H'' is a subgroup of ''G''". The trivial subgroup of any group is the subgroup consisting of just the identity element. A proper subgroup of a group ''G'' is a subgroup ''H'' which is a proper subset of ''G'' (that is, ). This is often represented notationally by , read as "''H'' is a proper subgroup of ''G''". Some authors also exclude the trivial group from being proper (that is, ). If ''H'' is a subgroup of ''G'', then ''G'' is sometimes called an overgroup of ''H''. The same definitions apply more generally when ''G'' is an arbitrary semigroup, but this article will only deal with subgroups of groups. Subgroup tests Suppose th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anaxyrus Woodhousii
Woodhouse's toad (''Anaxyrus woodhousii'') is a medium-sized () true toad native to the United States and Mexico. There are three recognized subspecies. ''A. woodhousii'' tends to hybridize with '' Anaxyrus americanus'' where their ranges overlap. Taxonomy Woodhouse's toad was first described in 1854 by the French herpetologist Charles Frédéric Girard. He gave it the name ''Bufo woodhousii'' in honor of the American physician and naturalist Samuel Washington Woodhouse. The large genus ''Bufo'' was split by Frost ''et al.'' in 2006, with the North American species being included in the genus ''Anaxyrus'' and this toad becoming ''A. woodhousii''. There are three recognised subspecies: *Rocky Mountain toad – '' Anaxyrus woodhousii woodhousii'' ( Girard, 1854) *East Texas toad – ''Anaxyrus woodhousii velatus'' (Bragg and Sanders, 1951)Bragg, A. N., and O. Sanders. 1951. A new subspecies of the ''Bufo woodhousii'' group of toads (Salientia: Bufonidae). Wasmann Journal of Biol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anaxyrus
''Anaxyrus'' is a genus of true toads in the family Bufonidae. The genus is endemic to North and Central America. Some authors consider ''Anaxyrus'' to be a subgenus within ''Bufo ''Bufo'' is a genus of true toads in the amphibian family Bufonidae. As traditionally defined, it was a wastebasket genus containing a large number of toads from much of the world, but following taxonomic reviews most of these have been moved to ...''. Species References External links * * * Further reading * Tschudi JJ (1845). "''Reptilium conspectus quae in Republica Peruana reperiuntur et pleraque observata vel collecta sunt in itinere''". ''Archiv für Naturgeschichte'' 11 (1): 150–170. (''Anaxyrus'', new genus, p. 170). (in Latin) {{Taxonbar, from=Q2279985 Taxa named by Johann Jakob von Tschudi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of The United States
Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramatic decline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fauna Of The Rocky Mountains
The ecology of the Rocky Mountains is diverse due to the effects of a variety of environmental factors. The Rocky Mountains are the major mountain range in western North America, running from the far north of British Columbia in Canada to New Mexico in the southwestern United States, climbing from the Great Plains at or below to peaks of over . Temperature and rainfall varies greatly also and thus the Rockies are home to a mixture of habitats including the alpine, subalpine and boreal habitats of the Northern Rocky Mountains in British Columbia and Alberta, the coniferous forests of Montana and Idaho, the wetlands and prairie where the Rockies meet the plains, a different mix of conifers on the Yellowstone Plateau in Wyoming and in the high Rockies of Colorado and New Mexico, and finally the alpine tundra of the highest elevations. These habitats are home to a great deal of wildlife from herbivores, such as elk, moose, mule deer, mountain goat and bighorn sheep, to predators lik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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