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Sheldgoose
''Chloephaga'' is a genus of sheldgeese in the family (biology), family Anatidae. Other Tadorninae, sheldgeese are found in the genera ''Alopochen'' and ''Neochen''. Taxonomy The genus ''Chloephaga'' was introduced in 1838 by the English naturalist Thomas Campbell Eyton in his ''A Monograph on the Anatidae, or Duck Tribe''. He designated the type species as ''Chloephaga magellanica''. This is ''Anas magellanica'' Johann Friedrich Gmelin, Gmelin, JF 1789, which is a Synonym (taxonomy), synonym of ''Anas leucoptera'' Gmelin, JF 1789. ''Anas leucoptera'' is now considered as a subspecies of the upland goose ''Chloephaga picta leucoptera''. The genus name comes from the combination of the Ancient Greek ''khloē'' meaning "grass" with ''-phagos'' meaning "-eating". A molecular phylogenetic study by Mariana Bulgarella and collaborators published in 2014 found that the Orinoco goose in the monotypic genus ''Neochen'', was embedded in the genus ''Chloephaga'': Based on this result, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), 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 as 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 name, infraspecific ranks, such as variety (botany), variety, may be named. In bacteriology and virology, under standard International Code of Nomenclature of Prokaryotes, bacterial nomenclature and virus clas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Charles Phillips
John Charles Phillips (November 5, 1876 – November 14, 1938) was an American hunter, zoologist, ornithologist, and environmentalist. He published over two hundred books and articles about animal breeding, sport hunting, ornithology, wildlife conservation, faunal surveys and systematic reviews, and Mendelian genetics. Life and work Phillips was born November 5, 1876, in Boston, Boston, Massachusetts. His father was businessman John Charles Phillips Jr. (1838-1885), who married Anna Tucker in London, England, on October 23, 1874. Phillips was the great-grandson of John Phillips (mayor), John Phillips (1770-1823), the first mayor of Boston, and the grand-nephew of abolitionist Wendell Phillips (1811-1884). Phillips prepared for college at Milton Academy and graduated from the John A. Paulson School of Engineering and Applied Sciences, Lawrence Scientific School of Harvard University in 1899 with a Bachelor of Science. He continued his education while he attended Harvard Medica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corrientes Province
Corrientes (, ‘currents’ or ‘streams’; ), officially the Province of Corrientes (; ) is a Provinces of Argentina, province in northeast Argentina, in the Mesopotamia, Argentina, Mesopotamia region. It is surrounded by (from the north, clockwise): Paraguay, the province of Misiones Province, Misiones, Brazil, Uruguay, and the provinces of Entre Ríos Province, Entre Rios, Santa Fe Province, Santa Fe and Chaco Province, Chaco. History Before the arrival of the Spanish conquest, the Kaingang people, Kaingang, Charrua and Guarani people, Guaraní lived in a big area that also covered most of the current province of Corrientes. The city of Corrientes was founded on 3 April 1588 by Juan Torres de Vera y Aragón as a mid-stop between Asunción and Buenos Aires; the city flourished thanks to the traffic from the route. Society of Jesus, Jesuits erected Missionary, missions in the north of the province, where they dedicated themselves to the expansion of the faith. In the wars of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Pleistocene
The Late Pleistocene is an unofficial age in the international geologic timescale in chronostratigraphy, also known as the Upper Pleistocene from a stratigraphic perspective. It is intended to be the fourth division of the Pleistocene Epoch within the ongoing Quaternary Period. It is currently defined as the time between 129,000 and c. 11,700 years ago. The late Pleistocene equates to the proposed Tarantian Age of the geologic time scale, preceded by the officially ratified Chibanian (commonly known as the Middle Pleistocene). The beginning of the Late Pleistocene is the transition between the end of the Penultimate Glacial Period and the beginning of the Last Interglacial around 130,000 years ago (corresponding with the beginning of Marine Isotope Stage 5). The Late Pleistocene ends with the termination of the Younger Dryas, some 11,700 years ago when the Holocene Epoch began. The term Upper Pleistocene is currently in use as a provisional or "quasi-formal" designation by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coracoid
A coracoid is a paired bone which is part of the shoulder assembly in all vertebrates except therian mammals (marsupials and placentals). In therian mammals (including humans), a coracoid process is present as part of the scapula, but this is not homologous with the coracoid bone of most other vertebrates. In other tetrapods, it joins the scapula to the front end of the sternum and has a notch on the dorsal surface which, along with a similar notch on the ventral surface of the scapula, forms the socket in which the proximal end of the humerus (upper arm bone) is located. The acrocoracoid process is an expansion adjacent to this contact surface, to which the shoulderward end of the biceps brachii muscle attaches in these animals. In birds (and generally theropods and related animals), the entire unit is rigid and called scapulocoracoid. This plays a major role in bird flight. In other dinosaurs, the main bones of the pectoral girdle were the scapula (shoulder blade) an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ashy-headed Goose
The ashy-headed goose (''Chloephaga poliocephala'') is a species of waterfowl in tribe Tadornini of subfamily Anserinae. It is found in Argentina and Chile.HBW and BirdLife International (2021) Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 6. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v6_Dec21.zip retrieved August 7, 2022 Taxonomy and systematics The ashy-headed goose is monotypic. Description The ashy-headed goose is long. Males weigh and females . Adults have the same plumage. Their heads and necks are gray, their upper back and breast chestnut with fine barring, their flanks barred black and white, and their belly white. In flight their blackish wings show bold white leading and trailing patches and a metallic green speculum. Their bill is black and the legs and feet orange with black markings. Juveniles' rufous areas are much duller, their back an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andean Goose
The Andean goose (''Chloephaga melanoptera'') is a species of waterfowl in tribe Tadornini of subfamily Anserinae.HBW and BirdLife International (2021) Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 6. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v6_Dec21.zip retrieved August 7, 2022 It is found in Argentina, Bolivia, Chile, and Peru.Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 24 July 2022. Species Lists of Birds for South American Countries and Territories. https://www.museum.lsu.edu/~Remsen/SACCCountryLists.htm retrieved July 24, 2022 Taxonomy and systematics The Andean goose's taxonomy is unsettled. The International Ornithological Committee (IOC) and BirdLife International's ''Handbook of the Birds of the World'' (HBW) place it in genus ''Chl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. Theoretical implications Monotypic taxa present several important theoretical challenges in biological classification. One key issue is known as "Gregg's Paradox": if a single species is the only member of multiple hierarchical levels (for example, being the only species in its genus, which is the only genus in its family), then each level needs a distinct definition to maintain logical structure. Otherwise, the different taxonomic ranks become effectively identical, which creates problems for organizing biological diversity in a hierarchical syste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orinoco Goose
The Orinoco goose (''Neochen jubata'') is a Near Threatened species of waterfowl in the tribe Tadornini of subfamily Anserinae.HBW and BirdLife International (2021) Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 6. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v6_Dec21.zip retrieved August 7, 2022 It is found in every mainland South American country except Chile, French Guiana, Suriname, and Uruguay.Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 24 July 2022. Species Lists of Birds for South American Countries and Territories. https://www.museum.lsu.edu/~Remsen/SACCCountryLists.htm retrieved July 24, 2022 Taxonomy and systematics The Orinoco goose's taxonomy is unsettled. The International Ornithological Committee (IOC) and BirdLife International's '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
