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Catagonus
''Catagonus'' is a genus of peccaries that contains the living Chacoan peccary, C. wagneri, and several extinct species. The genus has always been restricted to South America. Taxonomy ''Catagonus'' is notable in that the type species, '' C. metropolitanus'', is extinct; the living Chacoan peccary was first described in 1930 from subfossil remains, and only found alive by scientists in 1972 (an example of a Lazarus taxon In paleontology, a Lazarus taxon (plural ''taxa'') is a taxon that disappears for one or more periods from the fossil record, only to appear again either in later fossil records, or as actual living organisms, and often in isolated, obscure, ...). A 2017 study on the phylogenetic systematics of Tayassuidae species suggests that ''Catagonus'' should only contain ''C. metropolitanus''. The extinct narrow-headed peccary ''(C. stenocephalus)'' should be moved into ''Brasiliochoerus'', while the Chacoan peccary, ''C. bonaerensis'' and ''C. carlesi'' should be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chacoan Peccary
The Chacoan peccary or ''tagua'' (''Catagonus wagneri'' or ''Parachoerus wagneri'') is the last extant species of the genus ''Catagonus''; it is a peccary found in the Gran Chaco of Paraguay, Bolivia, and Argentina. Approximately 3,000 remain in the world. History The Chacoan peccary was first described in 1930 based on fossils and was originally thought to be an extinct species. In 1971, the animal was discovered to still be alive in the Chaco region, in the Argentine province of Salta. The species was well-known to the native people, but it took a while for Western scientists to acknowledge its existence; it is known locally as the ''tagua''. Because it was originally described as extinct before its "rediscovery", it is an example of a Lazarus taxon. Taxonomy The Chacoan peccary is notable in that it is not the type species of its genus, ''Catagonus'', despite being the only living representative. Instead, the type is the extinct '' Catagonus metropolitanus''. Such a case i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catagonus Wagneri
The Chacoan peccary or ''tagua'' (''Catagonus wagneri'' or ''Parachoerus wagneri'') is the last extant species of the genus ''Catagonus''; it is a peccary found in the Gran Chaco of Paraguay, Bolivia, and Argentina. Approximately 3,000 remain in the world. History The Chacoan peccary was first described in 1930 based on fossils and was originally thought to be an extinct species. In 1971, the animal was discovered to still be alive in the Chaco region, in the Argentine province of Salta. The species was well-known to the native people, but it took a while for Western scientists to acknowledge its existence; it is known locally as the ''tagua''. Because it was originally described as extinct before its "rediscovery", it is an example of a Lazarus taxon. Taxonomy The Chacoan peccary is notable in that it is not the type species of its genus, ''Catagonus'', despite being the only living representative. Instead, the type is the extinct '' Catagonus metropolitanus''. Such a case is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catagonus Bonaerensis
''Catagonus'' is a genus of peccaries that contains the living Chacoan peccary, C. wagneri, and several extinct species. The genus has always been restricted to South America. Taxonomy ''Catagonus'' is notable in that the type species, '' C. metropolitanus'', is extinct; the living Chacoan peccary was first described in 1930 from subfossil remains, and only found alive by scientists in 1972 (an example of a Lazarus taxon). A 2017 study on the phylogenetic systematics of Tayassuidae Peccaries (also javelinas or skunk pigs) are pig-like ungulates of the family Tayassuidae (New World pigs). They are found throughout Central and South America, Trinidad in the Caribbean, and in the southwestern area of North America. Peccari ... species suggests that ''Catagonus'' should only contain ''C. metropolitanus''. The extinct narrow-headed peccary ''(C. stenocephalus)'' should be moved into ''Brasiliochoerus'', while the Chacoan peccary, ''C. bonaerensis'' and ''C. carlesi'' should be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catagonus Stenocephalus
''Catagonus stenocephalus'' is an extinct species of peccary that lived in South America during the Late Pleistocene. Fossils have been found in Brazil, Argentina and Bolivia. It is commonly known as the narrow-headed peccary due to its long and markedly convex rostrum. Taxonomy The narrow-headed peccary was originally described as ''Dicotyles stenocephalus'' by Lund in 1838 from fossil remains found in Brazilian caves. It was subsequently included under ''Catagonus'' when formally published in 1880. In 1930, it was included in the genus ''Platygonus'' by Rusconi, which created the subgenus ''Brasiliochoerus'' to designate it. In 1981, Paula Couto elevated ''Brasiliochoerus'' to genus level. However, in later years some authors pointed out the similarity between ''Brasiliochoerus'' and ''Catagonus'', and subsequently the narrow-headed peccary has been included in the genus ''Catagonus''. In 2017, a study on the classification of the Tayassuidae suggested that the narrow-headed p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catagonus Metropolitanus
''Catagonus metropolitanus'' is an extinct species of peccary known from the Pleistocene of Argentina. Taxonomy ''Catagonus metropolitanus'' is notable as the type species of a genus that contains a living species; the Chacoan peccary. The living Chacoan peccary was first described in 1930 from subfossil remains, and was only found alive by scientists in 1972, making it an example of a Lazarus taxon. A 2017 study on the phylogenetic systematics of Tayassuidae species suggests that ''Catagonus'' should only contain ''C. metropolitanus''. The extinct narrow-headed peccary ''Catagonus stenocephalus'' is an extinct species of peccary that lived in South America during the Late Pleistocene. Fossils have been found in Brazil, Argentina and Bolivia. It is commonly known as the narrow-headed peccary due to its long and m ... ''(C. stenocephalus)'' should be moved to ''Brasiliochoerus'', while the Chacoan peccary, ''C. bonaerensis'' and '' C. carlesi'' should be placed in ''Parachoerus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catagonus Carlesi
''Catagonus carlesi'', or ''Parachoerus carlesi'', is an extinct species of peccary that lived in Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ... during the Late Pleistocene. Description Fossils of ''Catagonus carlesi'' have been dated to 26,630 ± 370 years BP. It was adapted to open or semi-open and arid or semi-arid environments with scarce or absent vegetation cover. These environmental conditions favored the settlement of mammals adapted to open environments. Taxonomy A 2017 study on the phylogenetic systematics of Tayassuidae species suggests that ''Catagonus carlesi'' should be moved to the genus ''Parachoerus'' along with the living Chacoan peccary and ''C. bonaerensis'', with ''Catagonus'' restricted to the extinct ''Catagonus metropolitanus, C. metropolitanus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tayassuidae
Peccaries (also javelinas or skunk pigs) are pig-like ungulates of the family Tayassuidae (New World pigs). They are found throughout Central and South America, Trinidad in the Caribbean, and in the southwestern area of North America. Peccaries usually measure between in length, and a full-grown adult usually weighs about . They represent the closest relatives of the family Suidae, which contains pigs and relatives. Together Tayassuidae and Suidae are grouped in the suborder Suina within the order Artiodactyla ( even-toed ungulates). Peccaries are social creatures that live in herds. They are omnivores and eat roots, grubs, and a variety of other foods. They can identify each other by their strong odors. A group of peccaries that travel and live together is called a squadron. A squadron of peccaries averages between six and nine members. Peccaries first appeared in North America during the Miocene and migrated into South America during the Pliocene–Pleistocene as part of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lazarus Taxon
In paleontology, a Lazarus taxon (plural ''taxa'') is a taxon that disappears for one or more periods from the fossil record, only to appear again either in later fossil records, or as actual living organisms, and often in isolated, obscure, or otherwise very specialized habitats. Likewise in conservation biology and ecology, it can refer to species or populations that were mistakenly thought to be extinct, and are rediscovered to be still living. The term Lazarus taxon was coined by Karl W. Flessa and David Jablonski in 1983 and was then expanded by Jablonski in 1986. Paul Wignall and Michael Benton defined Lazarus taxa as, "At times of biotic crisis many taxa go extinct, but others only temporarily disappeared from the fossil record, often for intervals measured in millions of years, before reappearing unchanged". Earlier work also supports the concept though without using the name Lazarus taxon, like work by Christopher R. C. Paul. The term refers to the story in the Christ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammal Genera
There are currently 1,258 genera, 161 families, 27 orders, and around 5,937 recognized living species of mammal. Mammalian taxonomy is in constant flux as many new species are described and recategorized within their respective genera and families. The taxonomy represented here is a compilation of the most logical and up-to-date information on mammalian taxonomy from many sources, the main ones being '' Handbook of the Mammals of the World'' series and '' Mammal Species of the World''. Afrosoricida Suborder Tenrecomorpha *Family Tenrecidae – tenrecs and otter shrews **Subfamily Geogalinae ***Genus '' Geogale'' – long-eared tenrec **Subfamily Oryzorictinae ***Genus '' Microgale'' – shrew tenrecs ***Genus '' Nesogale'' – shrew tenrecs ***Genus '' Oryzorictes'' – rice tenrecs **Subfamily Tenrecinae ***Genus '' Echinops'' – lesser hedgehog tenrec ***Genus '' Hemicentetes'' – streaked tenrec ***Genus '' Setifer'' – greater hedgehog tenrec ***Genus '' Tenrec'' – c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch (geology), epoch in the geologic time scale that extends from 5.33 to 2.58See the 2014 version of the ICS geologic time scale million years ago (Ma). It is the second and most recent epoch of the Neogene Period in the Cenozoic, Cenozoic Era. The Pliocene follows the Miocene Epoch and is followed by the Pleistocene Epoch. Prior to the 2009 revision of the geologic time scale, which placed the four most recent major glaciations entirely within the Pleistocene, the Pliocene also included the Gelasian Stage, which lasted from 2.59 to 1.81 Ma, and is now included in the Pleistocene. As with other older geologic periods, the Stratum, geological strata that define the start and end are well-identified but the exact dates of the start a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammal Genera With One Living Species
A mammal () is a vertebrate animal of the class Mammalia (). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles and birds, from which their ancestors diverged in the Carboniferous Period over 300 million years ago. Around 6,640 extant species of mammals have been described and divided into 27 orders. The study of mammals is called mammalogy. The largest orders of mammals, by number of species, are the rodents, bats, and eulipotyphlans (including hedgehogs, moles and shrews). The next three are the primates (including humans, monkeys and lemurs), the even-toed ungulates (including pigs, camels, and whales), and the Carnivora (including cats, dogs, and seals). Mammals are the only living members of Synapsida; this clade, together with Sauropsida (reptiles and birds), constitutes the lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
