The White-tailed Antelope Squirrel (Ammospermophilus leucurus) is a species of ground squirrel found in arid regions of the American West. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms (as opposed to folk taxonomy). ... Binomial name Aptenodytes forsteri Gray, 1844 For other uses, see Animal (disambiguation). ... Typical Classes Subphylum Urochordata - Tunicatas Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders Subclass Multituberculata (extinct) Plagiaulacida Cimolodonta Subclass Palaeoryctoides (extinct) Subclass Triconodonta (extinct) Subclass Eutheria (includes extinct ancestors)/Placentalia (excludes extinct ancestors) Afrosoricida Artiodactyla Carnivora Cetacea Chiroptera Cimolesta (extinct) Creodonta (extinct) Condylarthra (extinct) Dermoptera Desmostylia (extinct) Embrithopoda (extinct) Hyracoidea Insectivora Lagomorpha Litopterna (extinct) Macroscelidea Mesonychia (extinct) Notoungulata (extinct) Perissodactyla Pholidota Plesiadapiformes... Families Many, see text The order Rodentia is the most numerous of all the branches on the mammal family tree. ... Genera Many: see text. ... Species A. harrisii A. nelsoni A. leucurus A. interpres A. insularis The Antelope squirrels or Antelope ground squirrels are the genus Ammospermophilus of sciurids found in the south-western Mexico. ... In biology, binomial nomenclature is the formal method of naming species. ... Clinton Hart Merriam (December 5, 1855-March 19, 1942) was an American zoologist and ornithologist. ... Genera Many: see text. ... A dune in the Egyptian desert In geography, a desert is a landscape form or region that receives little precipitation. ... The Western United States, also referred to as the American West or simply The West, traditionally refers to the region constituting the westernmost states of the United States (see geographical terminology section for further discussion of these terms). ...
The Integrated Taxonomic Information System (ITIS) is a partnership designed to provide consistent and reliable information on the taxonomy of biological species. ... March 18 is the 77th day of the year in the Gregorian calendar (78th in leap years). ... 2006 (MMVI) is a common year starting on Sunday of the Gregorian calendar. ...
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