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Marsland Formation
The Marsland Formation is a geologic formation in Nebraska. It preserves fossils dating back to the Neogene period Period may refer to: Common uses * Era, a length or span of time * Full stop (or period), a punctuation mark Arts, entertainment, and media * Period (music), a concept in musical composition * Periodic sentence (or rhetorical period), a concept .... Fossil content Mammals Ungulates Reptiles Testudines See also * List of fossiliferous stratigraphic units in Nebraska * Paleontology in Nebraska References * Neogene geology of Nebraska {{Neogene-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morrill County, Nebraska
Morrill County is a county in the U.S. state of Nebraska. As of the 2010 United States Census, the population was 5,042. Its county seat is Bridgeport. In the Nebraska license plate system, Morrill County is represented by the prefix 64 (it had the 64th-largest number of vehicles registered in the state when the license plate system was established in 1922). History The Battle of Mud Springs and the Battle of Rush Creek between the US Army and Cheyenne, Lakota Sioux, and Arapaho occurred in 1865 within what would become Morrill County. On 3 November 1908, voters in Cheyenne County passed a measure calling for the division of that county. Accordingly, the Nebraska State Legislature passed an act providing for the division of Cheyenne County, the line of division running east–west, south of the town of Bridgeport. The northern portion so divided was to be called Morrill County. In December of that year, another election determined Bridgeport to be the seat of the new count ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Fossiliferous Stratigraphic Units In Nebraska
This article contains a list of fossil-bearing stratigraphic units in the state of Nebraska, U.S. Sites See also * Paleontology in Nebraska References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Nebraska Nebraska Stratigraphic units A stratigraphic unit is a volume of Rock (geology), rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrology, petrographic, lithology, lithologic or paleontology, p ... Stratigraphy of Nebraska Nebraska geography-related lists United States geology-related lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snapping Turtle
The Chelydridae is a family of turtles that has seven extinct and two extant genera. The extant genera are the snapping turtles, ''Chelydra'' and '' Macrochelys''. Both are endemic to the Western Hemisphere. The extinct genera are '' Acherontemys'', '' Chelydrops'', '' Chelydropsis'', ''Emarginachelys'', '' Macrocephalochelys'', '' Planiplastron'', and '' Protochelydra''. Fossil history The Chelydridae have a long fossil history, with extinct species reported from North America as well as all over Asia and Europe, far outside their present range. The earliest described chelydrid is '' Emarginachelys cretacea'', known from well-preserved fossils from the Maastrichtian stage of the Late Cretaceous of Montana. Another well-preserved fossil chelydrid is the Late Paleocene ''Protochelydra zangerli'' from North Dakota. The carapace of ''P. zangerli'' is higher-domed than that of the recent ''Chelydra'', a trait conjectured to be associated with the coexistence of large, turtle-eatin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macroclemys
The alligator snapping turtle (''Macrochelys temminckii'') is a large species of turtle in the family Chelydridae. The species is native to freshwater habitats in the United States. ''M. temminckii'' is one of the heaviest freshwater turtles in the world. It is the largest freshwater species of turtle in North America. It is often associated with, but not closely related to, the common snapping turtle, which is in the genus ''Chelydra''. The specific epithet ''temminckii'' is in honor of Dutch zoologist Coenraad Jacob Temminck. Taxonomy Although it was once believed that only one extant species exists in the genus '' Macrochelys'', recent studies have shown that there are two species, the other being the Suwannee snapping turtle (''M. suwanniensis'') of the Suwannee River. A third species, the Apalachicola snapping turtle (''M. apalachicolae''), has been proposed, but is generally not recognized. The alligator snapping turtle is given its common name because of its imme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Testudine
Turtles are an order of reptiles known as Testudines, characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked turtles), which differ in the way the head retracts. There are 360 living and recently extinct species of turtles, including land-dwelling tortoises and freshwater terrapins. They are found on most continents, some islands and, in the case of sea turtles, much of the ocean. Like other amniotes (reptiles, birds, and mammals) they breathe air and do not lay eggs underwater, although many species live in or around water. Turtle shells are made mostly of bone; the upper part is the domed carapace, while the underside is the flatter plastron or belly-plate. Its outer surface is covered in scales made of keratin, the material of hair, horns, and claws. The carapace bones develop from ribs that grow sideways and develop into broad flat plates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Menoceras Barbouri (fossil Rhinoceros) (Marsland Formation, Middle Miocene; Bridgeport Quarries, Near Bridgeport, Nebraska, USA) 5 (32808353546)
''Menoceras'' ("Crescent Horns") is a genus of extinct, small rhinoceros endemic to most of southern North America and ranged as far south as Panama during the early Miocene epoch. It lived from around 30.7—19.7 Ma, existing for approximately . Description Male ''Menoceras'' sported two horns side by side at the tip of the nose, whereas the females were hornless. All other rhino genera, save the related genus ''Diceratherium'', have their horns arranged one behind the other. Either gender of ''Menoceros'' grew to a length of long. Paleobiology ''Menoceras'' roamed across a tropical, savanna-like grassland and plains environment that covered much of North America. Because of the massive accumulations of fossil bones of this animal, particularly at Agate Springs Nebraska, ''Menoceras'' may have lived in large herds. Other sites include Martin-Anthony site Martin County, Florida, and Cady Mountains Horse Quarry, San Bernardino County, California. Taxonomy ''Menoceras'' was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Menoceras Barbouri (fossil Rhinoceros) (Marsland Formation, Middle Miocene; Bridgeport Quarries, Near Bridgeport, Nebraska, USA) 1 (32849205355)
''Menoceras'' ("Crescent Horns") is a genus of extinct, small rhinoceros endemic to most of southern North America and ranged as far south as Panama during the early Miocene epoch. It lived from around 30.7—19.7 Ma, existing for approximately . Description Male ''Menoceras'' sported two horns side by side at the tip of the nose, whereas the females were hornless. All other rhino genera, save the related genus ''Diceratherium'', have their horns arranged one behind the other. Either gender of ''Menoceros'' grew to a length of long. Paleobiology ''Menoceras'' roamed across a tropical, savanna-like grassland and plains environment that covered much of North America. Because of the massive accumulations of fossil bones of this animal, particularly at Agate Springs Nebraska, ''Menoceras'' may have lived in large herds. Other sites include Martin-Anthony site Martin County, Florida, and Cady Mountains Horse Quarry, San Bernardino County, California. Taxonomy ''Menoceras'' was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Menoceras NT Small
''Menoceras'' ("Crescent Horns") is a genus of extinct, small rhinoceros endemic to most of southern North America and ranged as far south as Panama during the early Miocene epoch. It lived from around 30.7—19.7 Ma, existing for approximately . Description Male ''Menoceras'' sported two horns side by side at the tip of the nose, whereas the females were hornless. All other rhino genera, save the related genus '' Diceratherium'', have their horns arranged one behind the other. Either gender of ''Menoceros'' grew to a length of long. Paleobiology ''Menoceras'' roamed across a tropical, savanna-like grassland and plains environment that covered much of North America. Because of the massive accumulations of fossil bones of this animal, particularly at Agate Springs Nebraska, ''Menoceras'' may have lived in large herds. Other sites include Martin-Anthony site Martin County, Florida, and Cady Mountains Horse Quarry, San Bernardino County, California. Taxonomy ''Menoceras'' w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhinoceros
A rhinoceros (; ; ), commonly abbreviated to rhino, is a member of any of the five extant species (or numerous extinct species) of odd-toed ungulates in the family Rhinocerotidae. (It can also refer to a member of any of the extinct species of the superfamily Rhinocerotoidea.) Two of the extant species are native to Africa, and three to South and Southeast Asia. Rhinoceroses are some of the largest remaining megafauna: all weigh at least one tonne in adulthood. They have a herbivorous diet, small brains (400–600 g) for mammals of their size, one or two horns, and a thick (1.5–5 cm), protective skin formed from layers of collagen positioned in a lattice structure. They generally eat leafy material, although their ability to ferment food in their hindgut allows them to subsist on more fibrous plant matter when necessary. Unlike other perissodactyls, the two African species of rhinoceros lack teeth at the front of their mouths; they rely instead on their lips to pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Box Butte County, Nebraska
Box Butte County is a County (United States), county in the U.S. state of Nebraska. As of the 2020 United States Census, the population was 10,604. Its county seat is Alliance, Nebraska, Alliance. The county was formed in 1886; it took its name from a large box-shaped butte north of Alliance. In the Nebraska Vehicle registration plates of Nebraska, license plate system, Box Butte County is represented by the prefix 65 (it had the sixty-fifth largest number of vehicles registered in the county when the license plate system was established in 1922). History Box Butte County was formed as part of a series of partitionings of the Nebraska Panhandle. In 1883, the Nebraska legislature divided the Panhandle into two counties, Sioux and Cheyenne. In 1885 the original Sioux County was divided into three counties: Sioux, Dawes, and Sheridan. Because of the distance to the county seat of Chadron, Nebraska, Chadron, residents of southern Dawes County asked that it be split off; in 1886, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Menoceras
''Menoceras'' ("Crescent Horns") is a genus of extinct, small rhinoceros endemic to most of southern North America and ranged as far south as Panama during the early Miocene epoch. It lived from around 30.7—19.7 Ma, existing for approximately . Description Male ''Menoceras'' sported two horns side by side at the tip of the nose, whereas the females were hornless. All other rhino genera, save the related genus '' Diceratherium'', have their horns arranged one behind the other. Either gender of ''Menoceros'' grew to a length of long. Paleobiology ''Menoceras'' roamed across a tropical, savanna-like grassland and plains environment that covered much of North America. Because of the massive accumulations of fossil bones of this animal, particularly at Agate Springs Nebraska, ''Menoceras'' may have lived in large herds. Other sites include Martin-Anthony site Martin County, Florida, and Cady Mountains Horse Quarry, San Bernardino County, California. Taxonomy ''Menoceras'' w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
