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Hemicyon
''Hemicyon'', also known as the "dog-bear" (literally "half dog", from Greek (half) + (dog)), is an extinct genus of hemicyonine bear, which probably originated in Eurasia but was found in Europe, Asia and North America during the Miocene epoch (), existing for approximately . ''Hemicyon'' is the best-known genus in the Hemicyoninae, a subfamily intermediate between bears and their canid ancestors but most often classified as bears. Hemicyonid bears should not be confused with Amphicyonids (bear-dogs), which are their own separate family of carnivores. Morphology ''Hemicyon'' was about long, and tall, with and carnassial blades on its teeth for cutting meat. ''Hemicyon'' is widely accepted to have been hypercarnivorous and highly predaceous. Unlike modern bears, ''Hemicyon'' walked on its toes; it was not plantigrade, but digitigrade, with long metapodials. This suggests that ''Hemicyon'' must have been an active hunter and a good runner, and presumably hunted by pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemicyoninae
Hemicyoninae is an extinct subfamily of Ursidae, often called dog bears (literally "half dog" (Ancient Greek, Greek: )). They were bear-like carnivorans living in Europe, North America, Africa and Asia during the Oligocene through Miocene epochs 33.9–5.3 Annum, Ma, existing for approximately . They are sometimes classified as a separate family (biology), family.McKenna, Malcolm C., and Bell, Susan K. 1997. ''Classification of Mammals Above the Species Level.'' Columbia University Press, New York, 631 pp. Systematics * Subfamily †Hemicyoninae (Frick, 1926) ** Tribe †Cephalogalini (de Bonis, 2013) *** †''Adelpharctos'' (de Bonis, 1971) **** †''Adelpharctos ginsburgi'' (de Bonis, 2011) **** †''Adelpharctos mirus'' (de Bonis, 1971) *** †''Cyonarctos'' (de Bonis, 2013) **** †''Cyonarctos dessei'' (de Bonis, 2013) *** †''Phoberogale'' (Ginsburg & Morales, 1995) **** †''Phoberogale minor'' (Filhol, 1877) **** †''Phoberogale bonali'' (Helbing, 1928) **** ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphicyonidae
Amphicyonidae is an extinct family of terrestrial carnivorans belonging to the suborder Caniformia. They first appeared in North America in the middle Eocene (around 45 mya), spread to Europe by the late Eocene (35 mya), and appear in Asia, and Africa by the early Miocene (23 mya). They had largely disappeared worldwide by the late Miocene (8 mya), with the latest recorded species at the end of the Miocene in Pakistan. They were among the first carnivorans to evolve large body size. Later in their history, they came into competition with hesperocyonine and borophagine canids. As dogs evolved similar body sizes and cranial and dental adaptations, the rise of these groups may have led to their extinction. Amphicyonids are often colloquially referred to as "bear-dogs". Taxonomy The family was erected by Haeckel (1886) lso attributed to Trouessart (1885) Their exact position has long been disputed. Some early paleontologists defined them as members of the family Canidae, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bear Dog
Amphicyonidae is an extinct family of terrestrial carnivorans belonging to the suborder Caniformia. They first appeared in North America in the middle Eocene (around 45 mya), spread to Europe by the late Eocene (35 mya), and appear in Asia, and Africa by the early Miocene (23 mya). They had largely disappeared worldwide by the late Miocene (8 mya), with the latest recorded species at the end of the Miocene in Pakistan. They were among the first carnivorans to evolve large body size. Later in their history, they came into competition with hesperocyonine and borophagine canids. As dogs evolved similar body sizes and cranial and dental adaptations, the rise of these groups may have led to their extinction. Amphicyonids are often colloquially referred to as "bear-dogs". Taxonomy The family was erected by Haeckel (1886) lso attributed to Trouessart (1885) Their exact position has long been disputed. Some early paleontologists defined them as members of the family Canidae, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa Fe Formation
The Santa Fe Group is a group of geologic formations in New Mexico and Colorado. It contains fossils characteristic of the Oligocene through Pleistocene epochs. The group consists of basin-filling sedimentary and volcanic rocks of the Rio Grande rift, and contains important regional aquifers. Description The Santa Fe Group is widely defined as basin-filling sedimentary and volcanic rocks of the Rio Grande rift. These range in age from late Oligocene to Pleistocene. The oldest formations in the group correspond to the earliest structural deformation associated with rifting. Geologic uplift of the region around the rift has ended deposition, and erosion in the Rio Grande river system has exposed many of the beds deposited earlier, often spectacularly, as in the badlands north of Santa Fe. The formations in the group are divided into lower and upper sections. The lower Santa Fe Group was deposited in bolsons (closed arid basins) where streams drained into intermittent play ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Édouard Lartet
Édouard Lartet (15 April 180128 January 1871) was a French geologist and paleontologist, and a pioneer of Paleolithic archaeology. Biography Lartet was born near Castelnau-Barbarens, ' of Gers, France, where his family had lived for more than five hundred years. He was educated for the law at Auch and Toulouse, but having private means elected to devote himself to science. The then recent work of Georges Cuvier on fossil Mammalia encouraged Lartet in excavations which led in 1834 to his first discovery of fossil remains in the neighborhood of Auch.G. Bibby, ''The Testimony of the Spade'' (Fontana 1962) p. 47 For the next decade and a half, he continued to explore the geography and palaeontology of the Pyrenees, uncovering ancestral apes close to the hominid line at Sansan, Gers, Sansan. In 1860, hearing of the discovery of human bones at a cave at Aurignac, and inspired by the work of William Pengelly, he turned his attention most fruitfully to the cave systems of the Dordogne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Farm Site
The Thomas Farm site is an Early Miocene, Hemingfordian assemblage of vertebrate fossils located in Gilchrist County, northern Florida. The Thomas Farm site is one of the richest terrestrial deposits of Miocene vertebrates in the 18 Ma range found in eastern North America according to the Florida Museum of Natural History. The site was discovered in 1931 by Florida Geological Survey (FGS) staff member Clarence Simpson. Specimens include: amphibians, reptiles, birds, small rodents, bats, rhinoceroses, three species of three-toed horses, several artiodactyls (including camels, peccary, deer-like species and other extinct forms), as well as dogs, bears, and bear-dogs. Specimens Reptilia *Pseudemys sp. * Testudo ''(T. tedwhitei)'' * Promilio ''(P. epileus)'' * Promilio ''(P. brodkorbi)'' * Proictinia ''(P. floridana)'' *Alligator ''(A. olseni)'' * Paraoxybelis ''(P. floridanus)'' * Pseudocemophora ''(P. antiqua)'' * Anilioides ''(A. minuatus)'' * Pseudoepicrates ''(P. stanolseni) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Miocene Mammals Of Europe
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 late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene Mammals Of Asia
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 late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene Carnivorans
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 late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
