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Barbourofelis
''Barbourofelis'' is an extinct genus of large, predatory, feliform carnivoran mammals of the family Barbourofelidae (false saber-tooth cats). The genus was endemic to North America and Eurasia during the Miocene until its extinction during the Tortonian, living from 13.6 to 7.3 Ma. Taxonomy ''Barbourofelis'' was named by Bertrand Schultz, Marian Schultz and Larry Martin (1970) in honor of Erwin Hinckley Barbour, who died a few days before the holotype was discovered. Its type is ''Barbourofelis fricki'' and is the type genus of the subfamily Barbourofelinae. It was reassigned to Hoplophoneinae by Flynn and Galiano (1982), then to Barbourofelidae by Bryant (1991), and to Nimravidae by Schultz, et al. (1970) and Martin (1998). Description While the species ''B. fricki'' is thought to have been a lion-sized predator, having a weight comparable to an African lion, with limb bones indicating a muscular, robust body, other species in the genus, such as ''B. morrisi'', are b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barbourofelis Fricki
''Barbourofelis'' is an extinct genus of large, predatory, feliform carnivoran mammals of the family Barbourofelidae (false saber-tooth cats). The genus was endemic to North America and Eurasia during the Miocene until its extinction during the Tortonian, living from 13.6 to 7.3 Ma. Taxonomy ''Barbourofelis'' was named by Bertrand Schultz, Marian Schultz and Larry Martin (1970) in honor of Erwin Hinckley Barbour, who died a few days before the holotype was discovered. Its type is ''Barbourofelis fricki'' and is the type genus of the subfamily Barbourofelinae. It was reassigned to Hoplophoneinae by Flynn and Galiano (1982), then to Barbourofelidae by Bryant (1991), and to Nimravidae by Schultz, et al. (1970) and Martin (1998). Description While the species ''B. fricki'' is thought to have been a lion-sized predator, having a weight comparable to an African lion, with limb bones indicating a muscular, robust body, other species in the genus, such as ''B. morrisi'', are belie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barbourofelidae
Barbourofelidae is an extinct family of carnivorans of the suborder Feliformia, sometimes known as false saber-toothed cats, that lived in North America, Eurasia and Africa during the Miocene epoch (16.9—9.0 million years ago) and existed for about . Taxonomy The type genus, ''Barbourofelis'', was originally described by Schultz et al. (1970) and assigned to a new tribe, Barbourofelini, within the felid subfamily Machairodontinae, along with the other sabre-toothed cats. Subsequently, the tribe was reassigned to the Nimravidae by Tedford (1978) and raised to a subfamily by Bryant (1991). However, a number of studies in the early 2000s identified a closer affinity of the barbourofelines to the Felidae than to the Nimravidae and they were reranked as a distinct family by Morlo et al. (2004). Since then the prevailing view has the barbourofelids as the sister group to the Felidae, although this has recently been challenged, following the description of the middle Miocene genus '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teleoceras
''Teleoceras'' (Greek: "perfect" (teleos), "horn" (keratos)) is an extinct genus of grazing rhinoceros. It lived in North America during the Miocene and Pliocene epochs during the Hemingfordian to the end of Hemphillian from around 17.5 to 4.9 million years ago. It grew up to lengths of 13 feet (4 meters long). Description ''Teleoceras'' had much shorter legs than modern rhinos, and a barrel chest, making its build more like that of a hippopotamus than a modern rhino. Based on this description, Henry Fairfield Osborn suggested in 1898 that it was semi-aquatic and hippo-like in habits. This idea persisted for about a century, but has recently been discounted by isotopic evidence. ''Teleoceras'' is now thought to have been a terrestrial grazer on C3 plants. ''Teleoceras'' had a single small nasal horn. Discovery ''Teleoceras'' is the most common fossil in the Ashfall Fossil Beds of Nebraska. In fact, its remains were so numerous and concentrated that the building housing the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erwin Hinckley Barbour
Erwin Hinckley Barbour (April 5, 1856 – May 10, 1947) was an American geologist and paleontologist. He was born near Oxford, Ohio, and was educated at Miami University and at Yale, where he graduated in 1882. He was assistant paleontologist to the United States Geological Survey under Othniel Charles Marsh from 1882 to 1888. He then taught at the University of Iowa for two years, before being hired by the University of Nebraska in 1891 as head of the Department of Geology. Upon his arrival in at the University of Nebraska, he worked vigorously to equip his department and to start populating the University museum. Within a year, he was appointed Curator of the University of Nebraska State Museum. He remained the director until 1941. Also in 1891, he was appointed by Governor Thayer as Acting State Geologist, a position he also retained for many years. Barbour gave his time free for the next 25 summers to manage field parties throughout the state, surveying the geological and p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Miocene
The Middle Miocene is a sub-epoch of the Miocene Epoch made up of two stages: the Langhian and Serravallian stages. The Middle Miocene is preceded by the Early Miocene. The sub-epoch lasted from 15.97 ± 0.05 Ma to 11.608 ± 0.005 Ma (million years ago). During this period, a sharp drop in global temperatures took place. This event is known as the Middle Miocene Climate Transition. For the purpose of establishing European Land Mammal Ages The European Land Mammal Mega Zones (abbreviation: ELMMZ, more commonly known as European land mammal ages or ELMA) are zones in rock layers that have a specific assemblage of fossils (biozones) based on occurrences of fossil assemblages of Europe ... this sub-epoch is equivalent to the Astaracian age. External links GeoWhen Database - Middle Miocene .02 02 * * {{geochronology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canine Tooth
In mammalian oral anatomy, the canine teeth, also called cuspids, dog teeth, or (in the context of the upper jaw) fangs, eye teeth, vampire teeth, or vampire fangs, are the relatively long, pointed teeth. They can appear more flattened however, causing them to resemble incisors and leading them to be called ''incisiform''. They developed and are used primarily for firmly holding food in order to tear it apart, and occasionally as weapons. They are often the largest teeth in a mammal's mouth. Individuals of most species that develop them normally have four, two in the upper jaw and two in the lower, separated within each jaw by incisors; humans and dogs are examples. In most species, canines are the anterior-most teeth in the maxillary bone. The four canines in humans are the two maxillary canines and the two mandibular canines. Details There are generally four canine teeth: two in the upper (maxillary) and two in the lower (mandibular) arch. A canine is placed laterally to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machairodontinae
Machairodontinae is an extinct subfamily of carnivoran mammals of the family Felidae (true cats). They were found in Asia, Africa, North America, South America, and Europe from the Miocene to the Pleistocene, living from about 16 million until about 11,000 years ago. The Machairodontinae contain many of the extinct predators commonly known as "saber-toothed cats", including the famed genus ''Smilodon'', as well as other cats with only minor increases in the size and length of their maxillary canines. The name means "dagger-tooth", from Greek μάχαιρα (''machaira''), sword. Sometimes, other carnivorous mammals with elongated teeth are also called saber-toothed cats, although they do not belong to the felids. Besides the machairodonts, other saber-toothed predators also arose in the Nimravidae, nimravids, Barbourofelidae, barbourofelids, Machaeroidinae, machaeroidines, Hyaenodonta, hyaenodonts and even in two groups of metatherians (the Thylacosmilidae, thylacosmilid Spara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nannippus
''Nannippus'' is an extinct genus of three-toed horse endemic to North America during the Miocene through Pleistoceneabout 13.3—1.8 million years ago (Mya), living around 11.5 million years. This ancient species of three-toed horse grew up to 3.5 feet (1.09 meters) and weighed between 165 pounds to 199 pounds, which was around the same size as a Sheep, domestic sheep. ''Nannippus'' lived as far south as central Mexico (''N. peninsulatus'') to as far north as Canada (''N. lenticularis''), to California in the west, and North Carolina (''N. lenticularis'') and Florida (''N. peninsulatus'') in the east. Unlike its relatives, ''Nannippus'', as well as all other three-toed horses endemic to North America, were browsers and mixed feeders that had diets consisting of C3 plants. Species *''N. aztecus'' Mooser, 1968. Widespread in Florida and also found in Texas, Oklahoma, and Chihuahua, became extinct 11.2—5.7 Mya. *''N. beckensis'' Dalquest and Donovan, 1973 found in Texas only and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neohipparion
''Neohipparion'' (Greek: "new" (neos), "pony" (hipparion)) is an extinct genus of equid, from the Neogene (Miocene to Pliocene) of North America and Central America Central America ( es, América Central or ) is a subregion of the Americas. Its boundaries are defined as bordering the United States to the north, Colombia to the south, the Caribbean Sea to the east, and the Pacific Ocean to the west. .... This prehistoric species of equid grew up to lengths of long. References Miocene horses Pliocene horses Prehistoric placental genera Miocene mammals of North America Pliocene mammals of North America Clarendonian Hemphillian Fossil taxa described in 1903 {{horse-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aepycamelus
''Aepycamelus'' is an extinct genus of camelids that lived during the Miocene 20.6–4.9 million years ago, existing for about . Its name is derived from the Homeric Greek , "high and steep" and κάμηλος – "camel"; thus, "high camel"; ''alticamelus'' in Latin. ''Aepycamelus'' spp. walked on their toes only. Unlike earlier species of camelids, they possessed cushioned pads like those of modern camels. Taxonomy ''Aepycamelus'' was formerly referred to the genus ''Alticamelus'', which Matthew (1901) erected for ''"Procamelus" altus'' Marsh, 1894, a camel species described from a calcaneum found in Neogene deposits in Oregon, after he referred a complete skeleton of a tall camel from Colorado to that species. Matthew and Cook (1909) erected ''Alticamelus giraffinus'' for the Colorado specimen after recognizing the ''A. altus'' holotype as indeterminate. MacDonald (1956) recognized ''Alticamelus'' as a'' nomen dubium'' and erected ''Aepycamelus'' for species previously assigne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synthetoceras
''Synthetoceras tricornatus'' is a large, extinct protoceratid, endemic to North America ( Nebraska ) during the Late Miocene, 10.3—5.3 Ma, existing for approximately . Fossils have been recovered from Nebraska and Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 .... Description With a length of and a mass of , ''Synthetoceras'' was the largest member of its family. It was also the last, and had what is considered to be the protoceratids' strangest set of horns.Geist, V. (1966). The Evolution of Horn-Like Organs. Behaviour, 27(1-2), 175–214. https://doi.org/10.1163/156853966x00155 The two horns above its eyes looked fairly normal and similar to those of many modern horned mammals, but on its snout it had a bizarre, long horn with a forked tip that gave it a Y shape. On ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protoceratid
Protoceratidae is an extinct family of herbivorous North American artiodactyls (even-toed ungulates) that lived during the Eocene through Pliocene at around 46.2—4.9 Mya, existing for about 41 million years. Classification Protoceratidae was erected by Othniel Charles Marsh in 1891, with the type genus '' Protoceras'' and assigned to the Artiodactyla. It was later assigned to Pecora, and more recently to Ruminantia or Tylopoda. However, recently a relationship to chevrotains in the infraorder Tragulina has been proposed. Morphology When alive, protoceratids would have resembled deer, though they were not directly related. Protoceratids ranged from 1 to 2 m in length, from about the size of a roe deer to an elk. Unlike many modern ungulates, they lacked cannon bones in their legs. Their dentition was similar to that of modern deer and cattle, suggesting they fed on tough grasses and similar foods, with a complex stomach similar to that of camels. At least some forms are believe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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