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Astrohippus
''Astrohippus'' ("Star horse") is an extinct member of the Equidae tribe Equini, the same tribe that contains the only living equid genus, '' Equus''. Fossil remains have been found in the central United States, Florida, and the Mexican states of Chihuahua, Jalisco, and Guanajuato. The fossils date in time from the oldest dating from the Barstovian in the Miocene to the youngest dating in the Hemphillian faunal stage of the early Pliocene. Based on study of the tooth morphology it is considered unlikely that ''Astrohippus'' could be an ancestor of modern horses, with the most likely ancestor of ''Astrohippus'' being ''Pliohippus''.MacFadden, B. J. (1984). "Astrohippus and Dinohippus". ''J. Vert. Paleon''. 4(2):273–283. The species '' Astrohippus ansae'' was originally described by W. D. Matthew and R. A. Stirton based on several cheek teeth found in the Coffee Ranch quarry, Hemphill County, Texas. This quarry has produced the remains of six other equid genera including ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astrohippus Ansae
''Astrohippus'' ("Star horse") is an extinct member of the Equidae tribe Equini, the same tribe that contains the only living equid genus, '' Equus''. Fossil remains have been found in the central United States, Florida, and the Mexican states of Chihuahua, Jalisco, and Guanajuato. The fossils date in time from the oldest dating from the Barstovian in the Miocene to the youngest dating in the Hemphillian faunal stage of the early Pliocene. Based on study of the tooth morphology it is considered unlikely that ''Astrohippus'' could be an ancestor of modern horses, with the most likely ancestor of ''Astrohippus'' being ''Pliohippus''.MacFadden, B. J. (1984). "Astrohippus and Dinohippus". ''J. Vert. Paleon''. 4(2):273–283. The species '' Astrohippus ansae'' was originally described by W. D. Matthew and R. A. Stirton based on several cheek teeth found in the Coffee Ranch quarry, Hemphill County, Texas. This quarry has produced the remains of six other equid genera including ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astrohippus Stockii
''Astrohippus'' ("Star horse") is an extinct member of the Equidae tribe Equini, the same tribe that contains the only living equid genus, '' Equus''. Fossil remains have been found in the central United States, Florida, and the Mexican states of Chihuahua, Jalisco, and Guanajuato. The fossils date in time from the oldest dating from the Barstovian in the Miocene to the youngest dating in the Hemphillian faunal stage of the early Pliocene. Based on study of the tooth morphology it is considered unlikely that ''Astrohippus'' could be an ancestor of modern horses, with the most likely ancestor of ''Astrohippus'' being ''Pliohippus''.MacFadden, B. J. (1984). "Astrohippus and Dinohippus". ''J. Vert. Paleon''. 4(2):273–283. The species ''Astrohippus ansae'' was originally described by W. D. Matthew and R. A. Stirton based on several cheek teeth found in the Coffee Ranch quarry, Hemphill County, Texas. This quarry has produced the remains of six other equid genera including ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliohippus
''Pliohippus'' (Greek (, "more") and (, "horse")) is an extinct genus of Equidae, the "horse family". ''Pliohippus'' arose in the middle Miocene, around 15 million years ago. The long and slim limbs of ''Pliohippus'' reveal a quick-footed steppe animal. While some specimens have one toe per leg, others have three (the main toe and two non-functional side toes). Until recently, because of its many anatomical similarities, ''Pliohippus'' was believed to be the ancestor of the present-day horse and its relatives in '' Equus''. Although ''Pliohippus'' clearly is an equid and thus related to ''Equus'', its skull had deep facial ''fossae'', a feature not found in any member of ''Equus''. Additionally, its teeth were strongly curved, unlike the very straight teeth of modern horses. Consequently, it is unlikely to be the ancestor of the modern horse; instead, it is likely to be the ancestor of ''Astrohippus''.MacFadden, B. J. (1984). "Astrohippus and Dinohippus". ''J. Vert. Paleon''. 4( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equidae
Equidae (sometimes known as the horse family) is the taxonomic family of horses and related animals, including the extant horses, asses, and zebras, and many other species known only from fossils. All extant species are in the genus '' Equus'', which originated in North America. Equidae belongs to the order Perissodactyla, which includes the extant tapirs and rhinoceros, and several extinct families. The term equid refers to any member of this family, including any equine. Evolution The oldest known fossils assigned to Equidae were found in North America, and date from the early Eocene epoch, 54 million years ago. They were once assigned to the genus ''Hyracotherium'', but the type species of that genus is now regarded as a palaeothere. The other species have been split off into different genera. These early equids were fox-sized animals with three toes on the hind feet, and four on the front feet. They were herbivorous browsers on relatively soft plants, and already adapte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemphill County
Hemphill County is a county located in the U.S. state of Texas. As of the 2020 census, its population was 3,382. The county seat and only incorporated community in the county is the city of Canadian. The county was created in 1876 and organized in 1887. It is named for John Hemphill, a judge and Confederate congressman. Hemphill County is one of six prohibition, or entirely dry, counties in the state of Texas. History Early history For the 200 years leading up to 1875, nomadic Indian tribes representing the Apache, Comanche, Kiowa, and others roamed the Panhandle following the huge bison (buffalo) herds. In search for an alternate route to California through Santa Fe, New Mexico, Josiah Gregg (1840), and Captain Randolph B. Marcy (1845) surveyed trails that crossed Hemphill County, following the south bank of the Canadian River. The 1874–75 Red River War was an effort by the United States Army to force the Indians of the Southern Plains to move to Indian Territor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene Animals Of North America
The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58See the 2014 version of the ICS geologic time scale million years ago. It is the second and most recent epoch of the Period in the . The Pliocene follows the Epoch and is followed by the |
Miocene Mammals Of North America
The Miocene ( ) is the first geological epoch of the Neogene The Neogene ( ), informally Upper Tertiary or Late Tertiary, is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period Mya. ... 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, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neogene Mammals Of North America
The Neogene ( ), informally Upper Tertiary or Late Tertiary, is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period Mya. The Neogene is sub-divided into two epochs, the earlier Miocene and the later Pliocene. Some geologists assert that the Neogene cannot be clearly delineated from the modern geological period, the Quaternary. The term "Neogene" was coined in 1853 by the Austrian palaeontologist Moritz Hörnes (1815–1868). During this period, mammals and birds continued to evolve into modern forms, while other groups of life remained relatively unchanged. The first humans (''Homo habilis'') appeared in Africa near the end of the period. Some continental movements took place, the most significant event being the connection of North and South America at the Isthmus of Panama, late in the Pliocene. This cut off the warm ocean currents from the Pacific to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neogene Mexico
The Neogene ( ), informally Upper Tertiary or Late Tertiary, is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period Mya. The Neogene is sub-divided into two epochs, the earlier Miocene and the later Pliocene. Some geologists assert that the Neogene cannot be clearly delineated from the modern geological period, the Quaternary. The term "Neogene" was coined in 1853 by the Austrian palaeontologist Moritz Hörnes (1815–1868). During this period, mammals and birds continued to evolve into modern forms, while other groups of life remained relatively unchanged. The first humans (''Homo habilis'') appeared in Africa near the end of the period. Some continental movements took place, the most significant event being the connection of North and South America at the Isthmus of Panama, late in the Pliocene. This cut off the warm ocean currents from the Pacific to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene Horses
The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58See the 2014 version of the ICS geologic time scale million years ago. It is the second and most recent epoch of the Period in the . The Pliocene follows the Epoch and is followed by the |
Miocene Horses
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 lat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ocote Local Fauna
Ocote is a common name for various species of pine trees in the genus ''Pinus'' that occur in the Spanish speaking Americas—Latin America. They include: *''Pinus apulcensis'' *''Pinus ayacahuite'' *''Pinus cooperi'' *''Pinus devoniana'' *''Pinus durangensis'' *'' Pinus gordoniana'' *'' Pinus greggii'' *''Pinus hartwegii'' *''Pinus herrerae'' *''Pinus jaliscana'' *''Pinus leiophylla'' *''Pinus lumholtzii'' *''Pinus maximinoi'' *''Pinus montezumae'' *''Pinus oocarpa'' *''Pinus patula'' *'' Pinus pringlei'' *'' Pinus pseudostrobus'' *''Pinus rzedowskii'' *''Pinus tecunumanii'' *''Pinus teocote ''Pinus teocote'' (teocote) is a species of conifer in the family Pinaceae. It is endemic to Mexico Mexico (Spanish language, Spanish: México), officially the United Mexican States, is a List of sovereign states, country in the southern p ...'' See also * * {{Plant common name Pinus taxa by common names Flora of Central America Flora of Mexico Flora of South America ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
