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Theriodictis
''Theriodictis'' is an extinct genus of hypercarnivorous wolf-like canid endemic to South America during the Pleistocene, living from 1.2 Ma- 500,000 years ago and existing for approximately . Fossil distribution The fossil remains are confined to the Tarija Formation of Bolivia, the Chui Formation of southern Brazil, and the Yupoí Formation of northern Argentina.''Theriodictis'' at .org The species ''T. tarijense'' was transferred to the genus '''' upon phylogenetic analysis. Description [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theriodictis Platensis Wikipedia Juandertal
''Theriodictis'' is an extinct genus of hypercarnivorous wolf-like canid endemic to South America during the Pleistocene, living from 1.2 Ma- 500,000 years ago and existing for approximately . Fossil distribution The fossil remains are confined to the Tarija Formation of Bolivia, the Chui Formation of southern Brazil, and the Yupoí Formation of northern Argentina.''Theriodictis'' at Fossilworks.org The species ''T. tarijense'' was transferred to the genus '''' upon phylogenetic analysis. Description [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protocyon
''Protocyon'' is an extinct genus of large canid endemic to South and North America during the Late Pleistocene living from 781 to 12thousand years ago. Description ''Protocyon'' was a hypercarnivore, suggested by its dental adaptations. Like many other large canids, it was most likely a pack hunter. It hunted the medium-sized grazers and browsers, and bite marks on fossils suggest that it may have hunted '' Glyptotherium''. The find of a molar tooth found in Santa Vitória do Palmar in Brazil suggests a weight of between for this particular specimen. , modest in size compared to other canids including the dire wolf, despite its modest size isotopic analysis shows a dietary overlap with Smilodon populator, which implies it actively hunted much larger prey animals since S. populator weighed at least 400kg. Taxonomy ''Protocyon'' was named by Giebel in 1855 and assigned to Canidae by Carroll in 1988. A member of the Cerdocyonina lineage, its closest living relative might be the bus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antifer
''Antifer'' is an extinct genus of large herbivorous deer of the family Cervidae, endemic to South America during the Pleistocene, living from 2.6 Ma to 13,000 years ago and existing for approximately .''Antifer'' at Fossilworks.org Cervids first entered the formerly isolated continent of South America during the as part of the . It would have been preyed upon by the |
Pleistocene
The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek grc, label=none, πλεῖστος, pleīstos, most and grc, label=none, καινός, kainós (latinized as ), 'new'. At the end of the preceding Pliocene, the previously isolated North and South American continents were joined by the Isthmus of Panama, causing Great American Interchang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cingulata
Cingulata, part of the superorder Xenarthra, is an order of armored New World placental mammals. Dasypodids and chlamyphorids, the armadillos, are the only surviving families in the order. Two groups of cingulates much larger than extant armadillos (maximum body mass of 45 kg (100 lb) in the case of the giant armadillo) existed until recently: pampatheriids, which reached weights of up to 200 kg (440 lb) and chlamyphorid glyptodonts, which attained masses of 2,000 kg (4,400 lb) or more. The cingulate order originated in South America during the Paleocene epoch about 66 to 56 million years ago, and due to the continent's former isolation remained confined to it during most of the Cenozoic. However, the formation of a land bridge allowed members of all three families to migrate to southern North America during the Pliocene or early Pleistocene as part of the Great American Interchange. After surviving for tens of millions of years, all of the pampat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesotherium
''Mesotherium'' ("Middle Beast") is an extinct genus of mesotheriid, a long-lasting family of superficially rodent-like, burrowing notoungulates from South America. It one of the youngest notoungulates, and the last known member of Typotheria. It was first named by Étienne Serres in 1867, and through further finds now contains four species, ''M. cristatum'', ''M. hystatum'', ''M. maendrum'', and ''M. pachygnathum''. Fossils have been found in Argentina, dating to the Early-Middle Pleistocene. Etymology Serres named ''Mesotherium'' so due to his belief that it was an intermediate between rodents and pachyderms (or ungulates), due to its large upper incisors, and its size and proportions. "Serres—by a happy inspiration proposed calling it Mesotherium—as being a common centre towards which all mammalia got happily confounded," Hugh Falconer wrote Darwin in April 1863. "Bravard sent it home under the name of Typotherium as being the central type from which all mammals diverged ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neochoerus
''Neochoerus'' ("new hog") is an extinct genus of rodent closely related to the living capybara. Fossil remains of ''Neochoerus'' have been found through North America (México and United States) and South America in Boyacá, Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Car .... References Further reading Paleobiology Database query for ''Neochoerus'' Cavies Pleistocene mammals of South America Prehistoric rodent genera Pleistocene rodents Pleistocene genera Pleistocene mammals of North America Prehistory of Colombia Pleistocene Colombia Altiplano Cundiboyacense Fossil taxa described in 1926 Taxa named by William Perry Hay {{paleo-rodent-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catagonus
''Catagonus'' is a genus of peccaries that contains the living Chacoan peccary 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 later. Likewise in conservation biology and ecology, it can refer to species or populations tha ...). 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 placed in ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peccary
A peccary (also javelina or skunk pig) is a medium-sized, pig-like hoofed mammal 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. They 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 Suina within the Artiodactyla (even toed ungulates). Peccaries are social creatures that live in herds. They eat roots, grubs, and a variety of 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 the Great American Interchange ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hippidion
''Hippidion'' (meaning ''little horse'') is an extinct genus of Equinae, equine that lived in South America from the Late Pliocene to the end of the Late Pleistocene (Lujanian), between two million and 11,000 years ago. They were one of two lineages of equines native to South America during the Pleistocene epoch, alongside those of the ''Equus (genus), Equus'' subgenus ''Amerhippus''. Evolution ''Hippidion'' has been considered a Lineal descendant, descendant of Evolution of the horse#Pliohippus, pliohippines, equines that migrated into the South American continent around 2.5 million years ago. Early analysis of the ancient DNA of ''Hippidion'' and other New World Pleistocene equines supported the novel hypothesis that ''Hippidion'' was actually a member of the living genus ''Equus (genus), Equus'', with a particularly close relationship to the wild horse, ''Equus ferus''. However this was later shown to be incorrect, with more complete sequences finding ''Hippidion'' as an ou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equus (genus)
''Equus'' , is a genus of mammals in the family Equidae, which includes horses, donkeys, and zebras. Within the Equidae, ''Equus'' is the only recognized extant genus, comprising seven living species. Like Equidae more broadly, ''Equus'' has numerous extinct species known only from fossils. The genus most likely originated in North America and spread quickly to the Old World. Equines are odd-toed ungulates with slender legs, long heads, relatively long necks, manes (erect in most subspecies), and long tails. All species are herbivorous, and mostly grazers, with simpler digestive systems than ruminants but able to subsist on lower-quality vegetation. While the domestic horse and donkey (along with their feral descendants) exist worldwide, wild equine populations are limited to Africa and Asia. Wild equine social systems are in two forms; a harem system with tight-knit groups consisting of one adult male or stallion, several females or mares, and their young or foals; and a terr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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