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Eobasileus Uintatherium
''Eobasileus cornutus'' ("horned dawn-king") was a prehistoric species of dinocerate mammal. Description About long, and standing some tall at the shoulder, with a weight estimated to be around , ''Eobasilius'' was the largest uintathere. It looked much like the related ''Uintatherium''. Like ''Uintatherium'', it had three pairs of blunt horns on its skull, possibly covered with skin like the ossicones of a giraffe. The frontal pair may have been composed of keratin, like the horn(s) of a rhinoceros. ''Eobasileus'' also had a pair of tusks shielded by bony protrusions of the lower jaw. A dispute over ''Eobasilius'' specifically and the uintatheres more generally helped to spark the Bone Wars between Edward Drinker Cope and Othniel Charles Marsh. Cope, Marsh, and Joseph Leidy independently discovered specimens from related species—though Cope and Marsh believed they had each discovered the same species—in the Fort Bridger area, leading to disputes over naming rights fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eobasileus Cornutus NT
''Eobasileus cornutus'' ("horned dawn-king") was a prehistoric species of dinocerate mammal. Description About long, and standing some tall at the shoulder, with a weight estimated to be around , ''Eobasilius'' was the largest uintathere. It looked much like the related ''Uintatherium''. Like ''Uintatherium'', it had three pairs of blunt horns on its skull, possibly covered with skin like the ossicones of a giraffe. The frontal pair may have been composed of keratin, like the horn(s) of a rhinoceros. ''Eobasileus'' also had a pair of tusks shielded by bony protrusions of the lower jaw. A dispute over ''Eobasilius'' specifically and the uintatheres more generally helped to spark the Bone Wars between Edward Drinker Cope and Othniel Charles Marsh. Cope, Marsh, and Joseph Leidy independently discovered specimens from related species—though Cope and Marsh believed they had each discovered the same species—in the Fort Bridger area, leading to disputes over naming rights fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eobasileus Uintatherium
''Eobasileus cornutus'' ("horned dawn-king") was a prehistoric species of dinocerate mammal. Description About long, and standing some tall at the shoulder, with a weight estimated to be around , ''Eobasilius'' was the largest uintathere. It looked much like the related ''Uintatherium''. Like ''Uintatherium'', it had three pairs of blunt horns on its skull, possibly covered with skin like the ossicones of a giraffe. The frontal pair may have been composed of keratin, like the horn(s) of a rhinoceros. ''Eobasileus'' also had a pair of tusks shielded by bony protrusions of the lower jaw. A dispute over ''Eobasilius'' specifically and the uintatheres more generally helped to spark the Bone Wars between Edward Drinker Cope and Othniel Charles Marsh. Cope, Marsh, and Joseph Leidy independently discovered specimens from related species—though Cope and Marsh believed they had each discovered the same species—in the Fort Bridger area, leading to disputes over naming rights fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridgerian
The Bridgerian North American Stage on the geologic timescale is the North American faunal stage according to the North American Land Mammal Ages chronology (NALMA), typically set from 50,300,000 to 46,200,000 years BP lasting . It is usually considered to overlap the Ypresian and Lutetian within the Eocene epoch. The Bridgerian is preceded by the Wasatchian and followed by the Uintan NALMA stages. Substages The Bridgerian is considered to contain the following substages: *Twinbuttean: Lower boundary source of the base of the Bridgerian (approximate). *Lutetian which is contained within the Middle Eocene sharing the lower boundary. The Lutetian overlaps with New Zealand's Arnold epoch, Dannevirke epoch, Bortonian While also using the international geologic time scale, many nations–especially those with isolated and therefore non-standard prehistories–use their own systems of dividing geologic time into epochs and faunal stages. In New Zealand, these epo ... stage, and H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tusks
Tusks are elongated, continuously growing front teeth that protrude well beyond the mouth of certain mammal species. They are most commonly canine teeth, as with pigs and walruses, or, in the case of elephants, elongated incisors. Tusks share common features such as extra-oral position, growth pattern, composition and structure, and lack of contribution to ingestion. Tusks are thought to have adapted to the extra-oral environments, like dry or aquatic or arctic. In most tusked species both the males and the females have tusks although the males' are larger. Most mammals with tusks have a pair of them growing out from either side of the mouth. Tusks are generally curved and have a smooth, continuous surface. The male narwhal's straight single helical tusk, which usually grows out from the left of the mouth, is an exception to the typical features of tusks described above. Continuous growth of tusks is enabled by formative tissues in the apical openings of the roots of the teeth. P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossil Taxa Described In 1872
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the absol ... [...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] |
Bulletin Of The Peabody Museum Of Natural History
The Peabody Museum of Natural History at Yale University is among the oldest, largest, and most prolific university natural history museums in the world. It was founded by the philanthropist George Peabody in 1866 at the behest of his nephew Othniel Charles Marsh, the early paleontologist. Most known to the public for its Great Hall of Dinosaurs, which includes a mounted juvenile ''Brontosaurus'' and the mural ''The Age of Reptiles,'' it also has permanent exhibits dedicated to human and mammal evolution; wildlife dioramas; Egyptian artifacts; and the birds, minerals and Native Americans of Connecticut. Description The Peabody Museum is located at 170 Whitney Avenue in New Haven, Connecticut, United States, and is operated by almost one hundred staff members. While the original building was demolished in 1917, it moved to its current location in 1925, and has since expanded to occupy the Peabody Museum, the attached Kline Geology Laboratory and the Class of 1954 Environmental S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The American Naturalist
''The American Naturalist'' is the monthly peer-reviewed scientific journal of the American Society of Naturalists, whose purpose is "to advance and to diffuse knowledge of organic evolution and other broad biological principles so as to enhance the conceptual unification of the biological sciences." It was established in 1867 and is published by the University of Chicago Press. The journal covers research in ecology, evolutionary biology, population, and integrative biology. , the editor-in-chief is Daniel I. Bolnick. According to the ''Journal Citation Reports'', the journal had a 2020 impact factor of 3.926. History The journal was founded by Alpheus Hyatt, Edward S. Morse, Alpheus S. Packard Jr., and Frederick W. Putnam at the Essex Institute in Salem, Massachusetts. The first issue appeared in print dated March 1867."American Naturalist," in International Magazine Co., ''Periodicals,'' vol. 1, no. 1 (October-December 1917), pg. 5. In 1878 the journal was for sale and Ed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fort Bridger, Wyoming
Fort Bridger is a census-designated place (CDP) in eastern Uinta County, Wyoming, United States. The population was 345 at the 2010 census. The community takes its name from the eponymous Fort Bridger, established in 1842, which is located within the boundaries of the CDP. History Fort Bridger was established in 1843 by Jim Bridger and Louis Vasquez. It served as a trading post for those who were traveling westward along the Oregon Trail, as well as LDS Pioneers, the Pony Express, the Lincoln Highway, and the transcontinental railroad. The fort was also commonly used to trade with the local Native Americans. The fort was not very glamorous, it was even a disappointment to most travelers. It was simply two log cabins about in length connected by a fence to hold horses. Most visitors complained about insufficient supplies and it being over priced. They did, however, have a blacksmith's shop that many travelers took advantage of. By 1858, Fort Bridger became a military outpos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Leidy
Joseph Mellick Leidy (September 9, 1823 – April 30, 1891) was an American paleontologist, parasitologist and anatomist. Leidy was professor of anatomy at the University of Pennsylvania, later was a professor of natural history at Swarthmore College and the director of scientific and educational programs at the Wagner Free Institute of Science. His book ''Extinct Fauna of Dakota and Nebraska'' (1869) contained many species not previously described and many previously unknown on the North American continent. At the time, scientific investigation was largely the province of wealthy amateurs. The Leidy Glacier in northwest Greenland was named by Robert Peary after him. Early life and family Joseph Leidy was born on September 9, 1823, to an established Philadelphia family of Pennsylvania Germans. His father, Philip, was a hatter; his mother, Catharine, died during childbirth when he was young. His father then married his wife's first cousin, Christiana Mellick. Leidy also ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Othniel Charles Marsh
Othniel Charles Marsh (October 29, 1831 – March 18, 1899) was an American professor of Paleontology in Yale College and President of the National Academy of Sciences. He was one of the preeminent scientists in the field of paleontology. Among his legacies are the discovery or description of dozens of new species and theories on the origins of birds. Born into a modest family, Marsh was able to afford higher education thanks to the generosity of his wealthy uncle George Peabody. After graduating from Yale College in 1860 he travelled the world, studying anatomy, mineralogy and geology. He obtained a teaching position at Yale upon his return. From the 1870s to 1890s, he competed with rival paleontologist Edward Drinker Cope in a period of frenzied Western American expeditions known as the Bone Wars. Marsh's greatest legacy is the collection of Mesozoic reptiles, Cretaceous birds, and Mesozoic and Tertiary mammals that now constitute the backbone of the collections of Yale's Peabo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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