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Leptomeryx
''Leptomeryx'' is an extinct genus of ruminant of the family Leptomerycidae, endemic to North America during the Eocene through Oligocene 38–24.8 Mya, existing for approximately . It was a small deer-like ruminant with somewhat slender body. Fossil distribution Sites and species recovered: *Titus Canyon, Inyo County, California ''(L.blacki)'' ~30.6—33.9 Ma. *UNSM Sx-8 (Orella C), Sioux County, Nebraska ''(L. elissae)'' ~33.9—24.8 Ma. *Anxiety Butte, Saskatchewan, Canada ''(L. sp., L. evansi)'' ~38—24.8 Ma. *Calf Creek, Saskatchewan, Canada, ''(L. mammifer)'' ~38—33.3 Ma. *Toadstool Park, Sioux County, Nebraska ''(L. speciosus)'' ~37.2—33.3 Ma. *Medicine Pole Hills, Bowman County, North Dakota Bowman County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 2,993. Its county seat is Bowman. History The legislature of the Dakota Territory designated Bowman (named for Edward M. Bowman, a member o ... ''(L. yoderi)'' ~38†... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptomeryx
''Leptomeryx'' is an extinct genus of ruminant of the family Leptomerycidae, endemic to North America during the Eocene through Oligocene 38–24.8 Mya, existing for approximately . It was a small deer-like ruminant with somewhat slender body. Fossil distribution Sites and species recovered: *Titus Canyon, Inyo County, California ''(L.blacki)'' ~30.6—33.9 Ma. *UNSM Sx-8 (Orella C), Sioux County, Nebraska ''(L. elissae)'' ~33.9—24.8 Ma. *Anxiety Butte, Saskatchewan, Canada ''(L. sp., L. evansi)'' ~38—24.8 Ma. *Calf Creek, Saskatchewan, Canada, ''(L. mammifer)'' ~38—33.3 Ma. *Toadstool Park, Sioux County, Nebraska ''(L. speciosus)'' ~37.2—33.3 Ma. *Medicine Pole Hills, Bowman County, North Dakota Bowman County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 2,993. Its county seat is Bowman. History The legislature of the Dakota Territory designated Bowman (named for Edward M. Bowman, a member o ... ''(L. yoderi)'' ~38†... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptomeryx BW
''Leptomeryx'' is an extinct genus of ruminant of the family Leptomerycidae, endemic to North America during the Eocene through Oligocene 38–24.8 Mya, existing for approximately . It was a small deer-like ruminant with somewhat slender body. Fossil distribution Sites and species recovered: *Titus Canyon, Inyo County, California ''(L.blacki)'' ~30.6—33.9 Ma. *UNSM Sx-8 (Orella C), Sioux County, Nebraska ''(L. elissae)'' ~33.9—24.8 Ma. *Anxiety Butte, Saskatchewan, Canada ''(L. sp., L. evansi)'' ~38—24.8 Ma. *Calf Creek, Saskatchewan, Canada, ''(L. mammifer)'' ~38—33.3 Ma. *Toadstool Park, Sioux County, Nebraska ''(L. speciosus)'' ~37.2—33.3 Ma. *Medicine Pole Hills, Bowman County, North Dakota Bowman County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 2,993. Its county seat is Bowman. History The legislature of the Dakota Territory designated Bowman (named for Edward M. Bowman, a member o ... ''(L. yoderi)'' ~38†... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deer
Deer or true deer are hoofed ruminant mammals forming the family Cervidae. The two main groups of deer are the Cervinae, including the muntjac, the elk (wapiti), the red deer, and the fallow deer; and the Capreolinae, including the reindeer (caribou), white-tailed deer, the roe deer, and the moose. Male deer of all species (except the water deer), as well as female reindeer, grow and shed new antlers each year. In this they differ from permanently horned antelope, which are part of a different family (Bovidae) within the same order of even-toed ungulates (Artiodactyla). The musk deer (Moschidae) of Asia and chevrotains (Tragulidae) of tropical African and Asian forests are separate families that are also in the ruminant clade Ruminantia; they are not especially closely related to Cervidae. Deer appear in art from Paleolithic cave paintings onwards, and they have played a role in mythology, religion, and literature throughout history, as well as in heraldry, such as ... [...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] |
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] |
Bowman County, North Dakota
Bowman County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 2,993. Its county seat is Bowman. History The legislature of the Dakota Territory designated Bowman (named for Edward M. Bowman, a member of the territorial House of Representatives during the 1883 session) as a separate county on March 8, 1883, although it was not organized at that time. In 1885, its boundaries were altered to cede territory to Billings and Villard Counties (Villard itself was eliminated in 1887). In 1891, and again in 1896, the South Dakota legislature eliminated the not-yet-organized Bowman County, due to scant settlement in the area, but these actions either were not put into effect (the 1891 vote) or were overturned in judicial appeal (the 1896 vote). A decision by the North Dakota supreme court on May 24, 1901, resurrected Bowman County. That decision also caused the county's area to slightly increase; its former boundary descriptions were replaced by d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chattian Genus Extinctions
The Chattian is, in the geologic timescale, the younger of two ages or upper of two stages of the Oligocene Epoch/Series. It spans the time between . The Chattian is preceded by the Rupelian and is followed by the Aquitanian (the lowest stage of the Miocene). Stratigraphic definition The Chattian was introduced by Austrian palaeontologist Theodor Fuchs in 1894. Fuchs named the stage after the Chatti, a Germanic tribe.Berry, Edward W"The Mayence Basin, a Chapter of Geologic History" ''The Scientific Monthly'', Vol. 16, No. 2, February 1923. pp. 114. Retrieved March 18, 2020. The original type locality was near the German city of Kassel. The base of the Chattian is at the extinction of the foram genus ''Chiloguembelina'' (which is also the base of foram biozone P21b). An official GSSP for the Chattian Stage was ratified in October of 2016. The top of the Chattian Stage (which is the base of the Aquitanian Stage, Miocene Series and Neogene System) is at the first appearance of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene Genus First Appearances
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] |
Paleogene United States
The Paleogene ( ; also spelled Palaeogene or Palæogene; informally Lower Tertiary or Early Tertiary) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period million years ago ( Mya) to the beginning of the Neogene Period Mya. It is the beginning of the Cenozoic Era of the present Phanerozoic Eon. The earlier term Tertiary Period was used to define the span of time now covered by the Paleogene Period and subsequent Neogene Period; despite no longer being recognised as a formal stratigraphic term, 'Tertiary' is still widely found in earth science literature and remains in informal use. Paleogene is often abbreviated "Pg" (but the United States Geological Survey uses the abbreviation PE for the Paleogene on the Survey's geologic maps). During the Paleogene, mammals diversified from relatively small, simple forms into a large group of diverse animals in the wake of the Cretaceous–Paleogene extinction event that ended the preceding Cr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene United States
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] |
Oligocene Mammals Of North America
The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from the Ancient Greek (''olÃgos'', "few") and (''kainós'', "new"), and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. Major changes during the Oligocene included a global expansion of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene Mammals Of North America
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] |
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