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Paranauchenia
''Paranauchenia'' is an extinct genus of South American litopterns belonging to the family Macraucheniidae. It is known only from fossil finds in Argentina. It possessed three toes and long limbs. The species ''Paranauchenia denticulata'' lived in the Miocene epoch in Argentina.Ameghino, F. 1904a. Nuevas especies de mamíferos Cretáceos y Terciarios de la República Argentina. ''Anales de la Sociedad Científica Argentina'' 16: 193-208; 17: 162-175, 182-192, 225-240, 241-291. Fossils have been found in the Arroyo Chasicó and Ituzaingó Formations of Argentina.''Paranauchenia'' at Fossilworks
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Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macrauchenia
''Macrauchenia'' ("long llama", based on the now-invalid llama genus, ''Auchenia'', from Greek "big neck") was a large, long-necked and long-limbed, three-toed native South American mammal in the order Litopterna. The genus gives its name to its family, the Macraucheniidae or "robust litopterns". Like other litopterns, it is most closely related to the odd-toed ungulates ( Perissodactyla), from which litopterns diverged approximately 66 million years ago. The oldest fossils in the genus date to the late Miocene, around seven million years ago, and ''M. patachonica'' disappears from the fossil record during the late Pleistocene, around 20,000-10,000 years ago. ''M. patachonica'' is one of the last and best known member of the family and is known primarily from the Luján Formation in Argentina, but is known from localities across southern South America. Another genus of macraucheniid ''Xenorhinotherium'' was present in northeast Brazil and Venezuela during the Late Pleistocene. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macraucheniopsis
''Macraucheniopsis'' is an extinct genus of litoptern mammal belonging to the family Macraucheniidae from the Middle to Late Pleistocene of Argentina. It, along with ''Macrauchenia'', ''Neolicaphrium'', and ''Xenorhinotherium'' were among the youngest known genera of litopterns. Classification Cladogram based in the phylogenetic analysis In biology Biology is the scientific study of life. It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. For instance, all organisms are made up of cells that pro ... published by Schmidt ''et al''., 2014, showing the position of ''Macraucheniopsis'': References {{Taxonbar, from=Q113946418 Macraucheniids Pleistocene mammals of South America Pleistocene Argentina Ensenadan Lujanian Fossils of Argentina Fossil taxa described in 1945 Prehistoric placental genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenorhinotherium
''Xenorhinotherium'' is an extinct genus of macraucheniine macraucheniids, closely related to ''Macrauchenia'' of Patagonia. The type species is ''X. bahiense''.''Xenorhinotherium'' at .org Taxonomy Some authors consider the genus ''Xenorhinotherium'' a synonym of ''Macrauchenia'', while all others consider it a distinct genus. The name ''Xenorhinotherium'' means "Strange-Nosed Beast" and ''bahiense'' refers to the Brazilian state of , where the first fossils were found. ''Xenorhinotherium ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Windhausenia
''Windhausenia'' is an extinct genus of mammals belonging to the family Macraucheniidae and the order Litopterna. While it reached the size of its better known relative '' Macrauchenia'', its constitution was lighter. Remains from the genus have been uncovered in Argentina. ''Windhausenia'' fossils were only found in the middle layers of the Uquía Formation. The genus was described in 1930 by Kraglievich, who considered it more derived than ''Promacrauchenia'', but less than '' Macrauchenia''. The genus survived the Great American Interchange. It had to compete with more derived relatives such as ''Macrauchenia'', and may have occupied a specialised ecological niche to avoid competition. Its remains are found in subtropical areas, while other genera were found in tropical and temperate environment. As fossils of this genus are often found in association with aeolian deposits, corresponding with arid and semiarid environments, it is possible it occupied more similar with m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Promacrauchenia
''Promacrauchenia'' is an extinct genus of macraucheniids that lived during the Late Miocene to Late Pliocene epochs of what is now Argentina and Bolivia. It belongs to the subfamily Macraucheniinae, which also includes '' Huayqueriana'', ''Macrauchenia'', and ''Xenorhinotherium ''Xenorhinotherium'' is an extinct genus of macraucheniine macraucheniids, closely related to ''Macrauchenia'' of Patagonia. The type species is ''X. bahiense''. Fossils of this genus have been found in the Ituzaingó, Andalhuala, and C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cullinia
''Cullinia'' is an extinct genus of litoptern, an order of South American native ungulates that included horse-like and camel-like animals such as ''Macrauchenia''. It is only known from fragmentary remains. ''Cullinia levis'' is known from Chasicoan remains found in the Arroyo Chasicó Formation of Argentina, and remains from the Brazilian state of Acre and the Huayquerian Ituzaingó Formation have been assigned to ''Cullinia'' sp. . History and naming ''Cullinia'' was described in 1931 by Cabrera and Kraglievich, from MLP 29-IX-178, an holotype containing several fragmentary remains including a mandible and a metatarsal. In 1995, Bond and López add to the holotype other remains from the upper dentition. It was named from the Araucanian word "cullin", meaning "animal". Description ''Cullinia'' was a slender, small Macraucheniidae. It had proportionally larger metapodials than '' Theosodon'', and its first lower molar was absent. Classification Below is a phylogenetic t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huayqueriana
''Huayqueriana'' is an extinct genus of South American litoptern, related to ''Macrauchenia'', and belonging to the same family, Macraucheniidae. It was formerly known as ''Macrauchenidia latidens'', described in 1939 by Cabrera, but redefined as ''Huayqueriana'' in 2016 based on the earlier name convention of Rovereto 1914.Forasiepi et al., 2016, p.11Cabrera (A.), 1939. Sobre vertebrados fósiles del Plioceno del Adolfo Alsina. ''Revista Museo de La Plata'', II (n. Serie), Paleont.: 3-35. The genus is named after the Huayquerías Formation and the eponymous Huayquerian South American land mammal age defined at the formation. Classification Cladogram based in the phylogenetic analysis In biology Biology is the scientific study of life. It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. For instance, all organisms are made up of cells that pro ... published by Schmidt ''et al''., 2014, showi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scalabrinitherium
''Scalabrinitherium'' is an extinct genus of mammals of the family Macraucheniidae. Fossils of this animal were found among the fossils of prehistoric xenarthrans in the Ituzaingó Formation of Argentina.''Scalabrinitherium'' at .org Description This animal was rather similar to a with a slightly heavy build; the was long and low, the front teeth were slightly spatulate, and the nasal aperture set far back. It is p ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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