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Oreonetes
''Oreonetes'' is an extinct genus of oreodont endemic to North America from the Late Eocene 38.0—33.9 Annum, Ma living approximately . ''Oreonetes'' was a very small browsing oreodont found in the forest undergrowth in the Western United States during the Late Eocene. Taxonomy ''Oreonetes'' was named by Loomis (1924). It is not extant. It was assigned to Merycoidodontidae by Loomis (1924) and Lander (1998). Fossil distribution Fossils are widespread through the western United States. Species ''O. anceps'' ''O. douglassi''https://www.researchgate.net/publication/372400702_Historical_Biology_Systematics_of_the_late_Eocene_'oreonetine'_oreodonts_Merycoidodontidae_Artiodactyla_Systematics_of_the_late_Eocene_'oreonetine'_oreodonts_Merycoidodontidae_Artiodactyla Sister genera ''Aclistomycter'', ''Bathygenys'', ''Brachycrus'' (syn. ''Pronomotherium''), ''Desmatochoerus,'' ''Eporeodon'' (syn. ''Hypselochoerus, Pseudodesmatochoerus''), ''Hypsiops'' (syn. ''Pseudomesoreodon, Submeryco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oreodont
Merycoidodontoidea, sometimes called "oreodonts" or "ruminating hogs", is an extinct superfamily of prehistoric cud-chewing artiodactyls with short faces and fang-like canine teeth. As their name implies, some of the better known forms were generally hog-like, and the group has traditionally been placed within the Suina (pigs, peccaries and their ancestors), though some recent work suggests they may have been more closely related to camels.Spaulding, M., O'Leary, M.A. & Gatesy, J. (2009): Relationships of Cetacea (Artiodactyla) Among Mammals: Increased Taxon Sampling Alters Interpretations of Key Fossils and Character Evolution. '' PLoS ONE'' no 4(9): e7062.article/ref> "Oreodont" means "mountain teeth", referring to the appearance of the molars. Most oreodonts were sheep-sized, though some genera grew to the size of cattle. They were heavy-bodied, with short four-toed hooves and comparatively long tails. The animals would have looked rather pig- or sheep-like, but features ... [...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] |
Merycoides
''Merycoides'' is an extinct genus of oreodont Merycoidodontoidea, sometimes called "oreodonts" or "ruminating hogs", is an extinct superfamily of prehistoric cud-chewing artiodactyls with short faces and fang-like canine teeth. As their name implies, some of the better known forms were gener ... of the subfamily Merycoidodontinae endemic to North America. It lived during the Oligocene to Late Miocene, 30.8—16.0 mya, existing for approximately . Fossils have been uncovered throughout the western U.S. as well as Florida. Species * ''M. cursor'' Douglass 1907 * ''M. harrisonensis'' Schultz & Falkenbach 1949 * ''M. longiceps'' Douglass 1907 * ''M. pariogonus'' Schultz & Falkenbach 1949 * ''M. relictus'' Cope 1884 References Oreodonts Oligocene mammals of North America Oligocene even-toed ungulates Chattian genus extinctions Rupelian genus first appearances Prehistoric even-toed ungulate genera {{paleo-eventoedungulate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene Artiodactyla
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic 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 13C in the atmosphere was exceptionally low in comparison with the more common isotope 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 Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and end of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ticholeptus
''Ticholeptus'' is an extinct genus of oreodont endemic to North America during the Middle Miocene epochs (16.0—13.6 mya), existing for approximately . Fossils have been uncovered throughout the U.S. from Florida to Oregon, as well as California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ..., and numerous sites in Nebraska, Nevada, and Montana. References Oreodonts Miocene mammals of North America Miocene Artiodactyla Serravallian extinctions Burdigalian first appearances Prehistoric Artiodactyla genera {{paleo-eventoedungulate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sespia
''Sespia'' ("of Sespe Creek") is an extinct genus of oreodont endemic to North America. They lived during the Late Oligocene 26.3—24.8 mya, existing for approximately . ''Sespia'' was cat to goat-sized and desert-dwelling. The genus was closely related to the larger ''Leptauchenia''. Fossils of the best known species, the cat-sized ''S. californica'', have been found California and are known from literally thousands of specimens. The largest species, the goat-sized ''S. ultima'', is known from late Oligocene deposits in Nebraska. ''S. ultima'' was once placed in a separate, monotypic, genus as ''Megasespia middleswarti''. Other species were once placed within ''Leptauchenia''. References External linksSan Diego Natural History Museum The San Diego Natural History Museum is a museum located in Balboa Park in San Diego, California. It was founded in 1874 as the San Diego Society of Natural History. It is the second oldest scientific institution west of the Mississ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phenacocoelus
''Phenacocoelus'' is an extinct genus of oreodont of the family Merycoidodontidae, endemic to North America. They lived during the Early Miocene The Early Miocene (also known as Lower Miocene) is a sub-epoch of the Miocene Epoch made up of two stages: the Aquitanian and Burdigalian stages. The sub-epoch lasted from 23.03 ± 0.05 Ma to 15.97 ± 0.05 Ma (million years ago). It was prece ... 24.8—20.4 mya, existing for approximately . Fossils have been uncovered in eastern Wyoming and western Nebraska. References Oreodonts Prehistoric mammals of North America Oligocene even-toed ungulates Miocene even-toed ungulates Aquitanian genus extinctions Chattian genus first appearances Prehistoric even-toed ungulate genera {{paleo-eventoedungulate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paroreodon
''Paroreodon'' is an extinct genus of oreodont of the family Merycoidodontidae, subfamily Merycoidodontinae, endemic to North America during the Oligocene-Miocene subepochs (30.8—20.6 mya), existing for approximately . Taxonomy ''Paroreodon'' was named by Thorpe (1921). Its type is ''Paroreodon marshi''. It was synonymized subjectively with ''Oreodontoides'' by Schultz and Falkenbach in 1947 and assigned to ''Merycoidodontidae'' by Thorpe (1921) and Lander (1998).C. B. Schultz and C. H. Falkenbach. 1947. Bulletin of the American Museum of Natural History 88 Fossil distribution Wheeler County, Oregon Wheeler County is a county in the U.S. state of Oregon. As of the 2020 census, the population was 1,451, making it Oregon's least populous county. It is named in honor of , an early settler who owned a farm near Mitchell. The county seat is .... Species ''Paroredon parvus'' (synonymized with ''Oreodontoides stocki, Paroredon marshi'') References Oreodonts Oligocene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oreodontoides
''Oreodontoides'' is an extinct genus of oreodont of the family Merycoidodontidae endemic to North America. It lived during the Late Oligocene to Early Miocene (24.8—20.4 mya), existing for approximately . Fossils have been uncovered throughout the western U.S. including at sites in Oregon, Wyoming, and South Dakota South Dakota (; Sioux language, Sioux: , ) is a U.S. state in the West North Central states, North Central region of the United States. It is also part of the Great Plains. South Dakota is named after the Lakota people, Lakota and Dakota peo .... References Oreodonts Prehistoric mammals of North America Oligocene even-toed ungulates Miocene even-toed ungulates Aquitanian genus extinctions Chattian genus first appearances Prehistoric even-toed ungulate genera {{paleo-eventoedungulate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merycoidodon
''Merycoidodon'' ("ruminating teeth") is an extinct genus of herbivorous artiodactyl of the family Merycoidodontidae, more popularly known by the name ''Oreodon'' ("hillock teeth"). It was endemic to North America during the Middle Eocene to Middle Miocene (46—16 mya) existing for approximately . Taxonomy Most researchers in paleobiology and paleontology now use the antecedent genus ''Merycoidodon'' to refer to this Oligocene epoch oreodont, even though it was once widely known by the younger synonym of ''Oreodon''. Taxonomically speaking, ''Merycoidodon'' belongs to the family Merycoidodontidae (once known as "Oreodontidae"), a group of artiodactyls related to camels that were endemic to North America. Its ancestors date back to the Eocene and its last descendants are known from the end of the Miocene, so that oreodonts, broadly speaking, lived throughout most of the Tertiary era. Morphology ''Merycoidodon'' would have somewhat resembled a pig in appearance, but had a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
