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Metamynodon
''Metamynodon'' is an extinct genus of Amynodontidae, amynodont Rhinocerotoidea, rhino that lived in North America (White River Fauna) and Asia from the late Eocene until early Oligocene, although the questionable inclusion of ''M. mckinneyi'' could extend their range to the Middle Eocene. The various species were large, displaying a suit of semiaquatic adaptations similar to those of the modern hippopotamus despite their closer affinities with rhinoceroses. Taxonomy ''Metamynodon'' is a member of the extinct family Amynodontidae, sometimes called "swamp rhinos" as they were once all believed to be semi-aquatic. It is split into two tribe (biology), tribes: the semi-aquatic Metamynodontini–''Paramynodon'', ''Sellamynodon'', ''Megalamynodon'', and ''Metamynodon''–and the tapir-like Cadurcodontini–''Procadurcodon'', ''Zaisanamynodon'', ''Cadurcodon'', and ''Cadurcotherium''. The Metamynodontini are found across the world, with ''Paramynodon'' from Myanmar, ''Sellamynodon'' fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amynodontidae
Amynodontidae ("defensive tooth") is a family of extinct perissodactyls related to true rhinoceroses. They are commonly portrayed as semiaquatic hippo-like rhinos but this description only fits members of the Metamynodontini; other groups of amynodonts like the cadurcodontines had more typical ungulate proportions and convergently evolved a tapir-like proboscis. The Greek name of the family describes their tusks, derived from enlarged canine teeth. Odd-toed ungulates are herbivores, so these tusks would have been used either to deter or defend against predators (as suggested by the name) or perhaps in fights among males.http://www.rhinoresourcecenter.com/pdf_files/141/1415340780.pdf Their fossils have been found in North America, and Eurasia ranging in age from the Middle Eocene to the Early Oligocene, with a single genus (''Cadurcotherium'') surviving into the Late Oligocene in South Asia (Pakistan). The genus ''Metamynodon'' may have survived into the early Miocene. Taxono ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraceratherium
''Paraceratherium'' is an extinct genus of hornless rhinoceros. It is one of the largest terrestrial mammals that has existed and lived from the early to late Oligocene epoch (34–23 million years ago). The first fossils were discovered in what is now Pakistan, and remains have been found across Eurasia between China and the Balkans. It is classified as a member of the family Paraceratheriidae. ''Paraceratherium'' means "near the hornless beast", in reference to ''Aceratherium'', the genus in which the type species ''P. bugtiense'' was originally placed. The exact size of ''Paraceratherium'' is unknown because of the incompleteness of the fossils. The shoulder height was about , and the length about . Its weight is estimated to have been about . The long neck supported a skull that was about long. It had large, tusk-like incisors and a nasal incision that suggests it had a prehensile upper lip or proboscis (trunk). The legs were long and pillar-like. The lifestyle of ''P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White River Fauna
The White River Fauna are fossil animals found in the White River Badlands of South Dakota, Wyoming, Colorado and Nebraska in the United States including Badlands National Park. The fossils have been found in the White River Formation, Chadron Formation, Brule Formation, and the Arikaree Formation. Animals from the White River Badlands date from the Eocene, Oligocene, the Miocene, and the Pliocene Epochs. List Genera include: See also * :White River Fauna Further reading * Rachel Benton, ''The White River Badlands: Geology and Paleontology'', Indiana University Press 2015 * William Berryman Scott William Berryman Scott (February 12, 1858 – March 29, 1947) was an American vertebrate paleontologist, authority on mammals, and principal author of the White River Oligocene monographs. He was a professor of geology and paleontology at P ..., ''A history of land mammals in the western hemisphere'', MacMillan Publishing Company, 1913 References Paleogene animals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clive Forster-Cooper
Sir Clive Forster Cooper, FRS (3 April 1880 – 23 August 1947) was an English palaeontologist and Director of the Cambridge University Museum of Zoology and Natural History Museum, London, Natural History Museum in London. He was the first to describe ''Paraceratherium'', also commonly known as ''Indricotherium'' or ''Baluchitherium'', the largest known land mammal. Early life He was born on 3 April 1880 in Hampstead, London, the second child and only son of John Forster Cooper and his wife Mary Emily Miley. His maternal grandfather, Miles Miley, was an amateur botanist and naturalist, and encouraged Clive Forster-Cooper in his interest in natural history. He was educated at Summer Fields School, Oxford, Rugby School.'Forster-Cooper, Sir Clive', in ''Who Was Who'' In 1897 he went up to Trinity College, Cambridge, and took a BA in 1901 and Master of Arts (Oxbridge and Dublin), MA in 1904. Early career In 1900, Forster Cooper travelled with John Stanley Gardiner to the Maldive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhinocerotoidea
Rhinocerotoidea is a superfamily (taxonomy), superfamily consisting of three family groups of odd-toed ungulates, three of which, the Amynodontidae, Hyracodontidae, and Paraceratheriidae, are extinct. The only extant family group is the Rhinocerotidae (true rhinoceroses), which survives as five living species. The extinct members of this superfamily are often called "rhinoceroses" alongside members of the family Rhinocerotidae, though they include genera, such as ''Paraceratherium'', which do not closely resemble modern rhinoceroses. Taxonomy The cladogram below follows a phylogenetic analysis by Bai ''et al.'' (2020): References {{Taxonbar, from=Q15487229 Odd-toed ungulates Mammal superfamilies Taxa named by John Edward Gray ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cadurcodon
''Cadurcodon'' is an extinct genus of amynodont rhino that lived during the Late Eocene to the Oligocene period. Fossils have been found throughout Mongolia and China. It may have sported a tapir-like proboscis A proboscis () is an elongated appendage from the head of an animal, either a vertebrate or an invertebrate. In invertebrates, the term usually refers to tubular mouthparts used for feeding and sucking. In vertebrates, a proboscis is an elong ... due to the distinct features found in fossil skulls. References Eocene rhinoceroses Oligocene rhinoceroses Cenozoic mammals of Europe Cenozoic mammals of Asia Prehistoric odd-toed ungulates Fossil taxa described in 1924 Prehistoric rhinoceroses Prehistoric placental genera {{Paleo-oddtoedungulate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tapir
Tapirs ( ) are large, herbivorous mammals belonging to the family Tapiridae. They are similar in shape to a pig, with a short, prehensile nose trunk. Tapirs inhabit jungle and forest regions of South and Central America, with one species inhabiting Southeast Asia. They are one of three extant branches of Perissodactyla (odd-toed ungulates), alongside equines and rhinoceros. Only a single genus, ''Tapirus'' is currently extant. Tapirs migrated into South America during the Pleistocene epoch from North America after the formation of the Isthmus of Panama as part of the Great American Interchange. Tapirs were once widespread in North America until the arrival of humans at the end of the Late Pleistocene, around 12,000 years ago. Species There are four widely recognized extant species of tapir, all in the genus ''Tapirus'' of the family Tapiridae. They are the South American tapir, the Malayan tapir, Baird's tapir, and the mountain tapir. In 2013, a group of researchers said they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) Epoch is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', "dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope Carbon-13, 13C in the atmosphere was exceptionally low in comparison with the more common isotope Carbon-12, 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Popigai impact structure, Siberia and in what is now ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
