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Merycodontinae
Merycondontinae is a subfamily of pronghorn that arose during the middle of the Miocene and became extinct by the end of that period. The Merycondontinae were small, slightly built, fast-running ungulates. Both males and females were horned. The genera ''Meryceros'' and ''Submeryceros'' are generally regarded as synonymous with ''Merycodus ''Merycodus'' is an extinct genus of the artiodactyl family Antilocapridae. Fossils of this genus have been found in the Santa Fe Group of New Mexico ) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , s ...''. References *Byers, John A.; American Pronghorn: Social Adaptations & the Ghosts of Predators Past; University of Chicago Press; 1998 Prehistoric pronghorns {{paleo-eventoedungulate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paracosoryx
''Paracosoryx'' is an extinct genus of antilocaprid that lived in North America during the Miocene. Taxonomy It was originally described as a subgenus of ''Cosoryx'', but was elevated to full genus status. It has been suggest that ''Paracosoryx'' is paraphyletic, with some species more related to members of other genera than each other. Description The burr of ''Paracoryx'' is located relatively high on the shaft compared to other members of Merycodontinae Merycondontinae is a subfamily of pronghorn that arose during the middle of the Miocene and became extinct by the end of that period. The Merycondontinae were small, slightly built, fast-running ungulates. Both males and females were horned. .... The horn shaft is relatively long, with small, curved tines. References {{Reflist Prehistoric even-toed ungulate genera Prehistoric pronghorns Miocene even-toed ungulates Miocene mammals of North America ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ramoceros
''Ramoceros'' is an extinct genus of the artiodactyl family Antilocapridae endemic to Middle Miocene (Clarendonian) North America.Blount, Kitty and Crowley, Maggie. ''Encyclopedia of Dinosaurs & Prehistoric Life'', p. 271 (Penguin, 2008). Taxonomy ''Ramoceros'' is one of several genera that originated from the subfamily Merycodontinae, of which the pronghorn is the only surviving remnant. In fact, pronghorn is the only surviving remnant of the entire family Antilocapridae.Smithsonian Institution. North American MammalsPronghorn ''Antilocapra americana''/ref> '' Merriamoceros'' was originally placed in ''Ramoceros'' (as ''Ramoceros coronatus''). Description ''Ramoceros'' was a prehistoric relative of modern pronghorn The pronghorn (, ) (''Antilocapra americana'') is a species of artiodactyl (even-toed, hoofed) mammal indigenous to interior western and central North America. Though not an antelope, it is known colloquially in North America as the American a ... (''An ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antilocapridae
The Antilocapridae are a family of artiodactyls endemic to North America. Their closest extant relatives are the giraffids with which they comprise the superfamily Giraffoidea. Only one species, the pronghorn (''Antilocapra americana''), is living today; all other members of the family are extinct. The living pronghorn is a small ruminant mammal resembling an antelope. Description In most respects, antilocaprids resemble other ruminants. They have a complex, four-chambered stomach for digesting tough plant matter, cloven hooves, and small, forked horns. Their horns resemble those of the bovids, in that they have a true horny sheath, but, uniquely, they are shed outside the breeding season, and subsequently regrown. Their lateral toes are even further diminished than in bovids, with the digits themselves being entirely lost, and only the cannon bones remaining. Antilocaprids have the same dental formula as most other ruminants: . Classification The antilocaprids are ruminants o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merycodus
''Merycodus'' is an extinct genus of the artiodactyl family Antilocapridae. Fossils of this genus have been found in the Santa Fe Group of New Mexico. Taxonomy ''Merycodus'' has had a confusing taxonomic history. The closely related ''Meryceros'' and ''Submeryceros'' are generally regarded as synonynous with ''Merycodus''. One described species known as ''Merycodus grandis'' has now been reclassified as a species of '' Prosynthetoceras''. Another former species, ''M. furcatus'' is now placed in ''Cosoryx ''Cosoryx'' is an extinct genus of antilocaprid that lived in the Miocene of Nevada. Fossils of this genus have also been found in the Santa Fe Group in New Mexico. ''Cosoryx'' has sometimes been considered synonymous with ''Merycodus ' ...''. Description ''Merycodus'' had relatively short horn shafts with tines of nearly equal size that were about as long as the shaft. Species traditionally included in ''Meryceros'' had horns that were generally larger and more l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosoryx
''Cosoryx'' is an extinct genus of antilocaprid that lived in the Miocene of Nevada. Fossils of this genus have also been found in the Santa Fe Group in New Mexico. ''Cosoryx'' has sometimes been considered synonymous with ''Merycodus ''Merycodus'' is an extinct genus of the artiodactyl family Antilocapridae. Fossils of this genus have been found in the Santa Fe Group of New Mexico ) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , s ...''. References Prehistoric pronghorns Miocene even-toed ungulates Miocene mammals of North America Prehistoric even-toed ungulate genera Fossil taxa described in 1869 {{Paleo-eventoedungulate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merriamoceros
''Merriamoceros'' is an extinct genus of pronghorn. It is known from a single species, which is also the type species, ''M. coronatus''. Discovery and naming The type specimen (UCMP 20052) that defines this species is named ''Merriamoceros coronatus'' taking after its discoverer, J.M. Merriam. It is known from a partial skull (a single fragmentary horn or antler). Remains of ''Merriamoceros'' were found in rock formations dating to the Early Miocene period, 15.9 to 13.6 million years ago. Its type locality is Barstow, which is in a Barstovian terrestrial horizon in the Barstow Formation of California. ''Merriamoceros'' was originally named as a subspecies of ''Ramoceros'', but later J. T. Gregory elevated it to a generic level, stating that its palmate style horns were distinct characteristics and required a separate classification. The developmental series discussed by C. Frick further supports the hypothesis of homology between the horns of ''Ramoceros'' and ''Merriamoceros' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subfamily
In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoological names with "-inae". See also * International Code of Nomenclature for algae, fungi, and plants * International Code of Zoological Nomenclature * Rank (botany) * Rank (zoology) In biological classification, taxonomic rank is the relative level of a group of organisms (a taxon) in an ancestral or hereditary hierarchy. A common system consists of species, genus, family, order, class, phylum, kingdom, domain. While ... Sources {{biology-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] |
Merycodus Osborni
''Merycodus'' is an extinct genus of the artiodactyl family Antilocapridae. Fossils of this genus have been found in the Santa Fe Group of New Mexico ) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , seat = Santa Fe , LargestCity = Albuquerque , LargestMetro = Tiguex , OfficialLang = None , Languages = English, Spanish ( New Mexican), Navajo, Ke .... Taxonomy ''Merycodus'' has had a confusing taxonomic history. The closely related ''Meryceros'' and ''Submeryceros'' are generally regarded as synonynous with ''Merycodus''. One described species known as ''Merycodus grandis'' has now been reclassified as a species of '' Prosynthetoceras''. Another former species, ''M. furcatus'' is now placed in '' Cosoryx''. Description ''Merycodus'' had relatively short horn shafts with tines of nearly equal size that were about as long as the shaft. Species traditionally included in ''Meryceros'' had horns that were generally larger and more ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ungulate
Ungulates ( ) are members of the diverse clade Ungulata which primarily consists of large mammals with hooves. These include odd-toed ungulates such as horses, rhinoceroses, and tapirs; and even-toed ungulates such as cattle, pigs, giraffes, camels, sheep, deer, and hippopotamuses. Cetaceans such as whales, dolphins, and porpoises are also classified as even-toed ungulates, although they do not have hooves. Most terrestrial ungulates use the hoofed tips of their toes to support their body weight while standing or moving. The term means, roughly, "being hoofed" or "hoofed animal". As a descriptive term, "ungulate" normally excludes cetaceans as they do not possess most of the typical morphological characteristics of other ungulates, but recent discoveries indicate that they were also descended from early artiodactyls. Ungulates are typically herbivorous and many employ specialized gut bacteria to allow them to digest cellulose. Some modern species, such as pigs, are omnivorous, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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