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Hyaenodon
''Hyaenodon'' ("hyena-tooth") is an extinct genus of carnivorous hyaenodont mammals from tribe Hyaenodontini, within subfamily Hyaenodontinae in family Hyaenodontidae,Malcolm C. McKenna, Susan K. Bell (1997."Classification of Mammals: Above the Species Level" Columbia University Press, New York, 631 pages. that lived in Eurasia and North America during the middle Eocene to early Miocene, existing for about 25.1 million years. Description Typical of early carnivorous mammals, individuals of ''Hyaenodon'' had a very massive skull, but only a small brain. The skull is long with a narrow snout - much larger in relation to the length of the skull than in canine carnivores, for instance. The neck was shorter than the skull, while the body was long and robust and terminated in a long tail. Compared to the generally larger (but not closely related) '' Hyainailouros'', the dentition of ''Hyaenodon'' was geared more towards shearing meat and less towards bone crushing. Some specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaenodon And Leptomeryx
''Hyaenodon'' ("hyena-tooth") is an extinct genus of carnivorous hyaenodont mammals from tribe Hyaenodontini, within subfamily Hyaenodontinae in family Hyaenodontidae,Malcolm C. McKenna, Susan K. Bell (1997."Classification of Mammals: Above the Species Level" Columbia University Press, New York, 631 pages. that lived in Eurasia and North America during the middle Eocene to early Miocene, existing for about 25.1 million years. Description Typical of early carnivorous mammals, individuals of ''Hyaenodon'' had a very massive skull, but only a small brain. The skull is long with a narrow snout - much larger in relation to the length of the skull than in canine carnivores, for instance. The neck was shorter than the skull, while the body was long and robust and terminated in a long tail. Compared to the generally larger (but not closely related) '' Hyainailouros'', the dentition of ''Hyaenodon'' was geared more towards shearing meat and less towards bone crushing. Some species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaenodontidae
Hyaenodontidae ("hyena teeth") is a family of extinct predatory mammals from extinct superfamily Hyaenodontoidea within extinct order Hyaenodonta. Hyaenodontids arose during the early Eocene and persisted well into the early Miocene. Fossils of this group have been found in Asia, North America and Europe. (1985): ''The Field Guide to Prehistoric Life.'' Facts on File Publications, New York. Classification and phylogeny Taxonomy * Family: †Hyaenodontidae ** Genus: †'' Boritia'' *** †''Boritia duffaudi'' ** Genus: †'' Neosinopa'' *** †''Neosinopa gobiensis'' ** Genus: †'' Praecodens'' *** †''Praecodens acutus'' ** Genus: †'' Preregidens'' *** †''Preregidens langebadrae'' ** Genus: †'' Protoproviverra'' *** †''Protoproviverra palaeonictides'' ** (unranked): †''Cynohyaenodon''/''Quercytherium'' clade *** Genus: †'' Cynohyaenodon'' (paraphyletic genus) **** †''Cynohyaenodon cayluxi'' **** †''Cynohyaenodon lautricensis'' **** †''Cynohyae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaenodontinae
Hyaenodontinae ("hyena teeth") is a subfamily of extinct predatory hyaenodontid mammals from extinct family Hyaenodontidae. Fossil remains of these mammals are known from early Eocene to early Miocene deposits in Europe, Asia and North America. Classification and phylogeny Taxonomy * Subfamily: †Hyaenodontinae ** Genus: †'' Consobrinus'' *** †''Consobrinus quercy'' ** Genus: †'' Propterodon'' (paraphyletic genus) *** †''Propterodon morrisi'' *** †''Propterodon paganensis'' *** †''Propterodon tongi'' *** †''Propterodon witteri'' ** Tribe: † Epipterodontini *** Genus: †'' Epipterodon'' **** †''Epipterodon hyaenoides'' *** Genus: †'' Immanopterodon'' **** †''Immanopterodon acutidens'' **** †''Immanopterodon implacidus'' ** Tribe: †Hyaenodontini *** Genus: †''Hyaenodon'' **** †''Hyaenodon brachyrhynchus'' **** †''Hyaenodon chunkhtensis'' **** †''Hyaenodon dubius'' **** †''Hyaenodon eminus'' **** †''Hyaenodon exiguus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaenodonta
Hyaenodonta ("hyena teeth") is an extinct order of hypercarnivorous placental pan-carnivoran mammals from mirorder Ferae. Hyaenodonts were important mammalian predators that arose during the early Paleocene in Europe and persisted well into the late Miocene. Characteristics Hyaenodonts are characterized by long skulls, slender jaws, slim bodies and a plantigrade stance. They generally ranged in size from 30 to 140 cm at the shoulder. While '' Simbakubwa kutokaafrika'' may have been up to (surpassing the modern polar bear in size) and ''Hyaenodon gigas'' (the largest species from genus '' Hyaenodon'') was as much as 1.4 m high at the shoulder, 3.0 m long and weighed about 330 kg, most of hyaenodonts were in the 5–15 kg range, equivalent to a mid-sized dog. The anatomy of their skulls show that they had a particularly acute sense of smell, while their teeth were adapted for shearing, rather than crushing. Because of their size range, it is probable tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyainailurus
''Hyainailouros'' ("hyena-cat") is an extinct polyphyletic genus of hyainailourid hyaenodont mammal of the polyphyletic tribe Hyainailourini within paraphyletic subfamily Hyainailourinae, that lived during the early to middle Miocene, of which there were at least three species spread across Europe, Africa, and Asia. Closely related to other large African hyaenodonts such as '' Simbakubwa'' and ''Megistotherium'', ''Hyainailouros'' walked with a semi-digitigrade stance and was probably capable of large, leaping bounds. Alongside its African relatives and the last members of the genus ''Hyaenodon ''Hyaenodon'' ("hyena-tooth") is an extinct genus of carnivorous hyaenodont mammals from tribe Hyaenodontini, within subfamily Hyaenodontinae in family Hyaenodontidae,Malcolm C. McKenna, Susan K. Bell (1997."Classification of Mammals: Above t ...'' from Asia, ''Hyainailouros'' was among the largest hyaenodonts that existed. Phylogeny The phylogenetic relationships of genus ''H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dissopsalis
''Dissopsalis'' ("double scissors") is a genus of teratodontine hyaenodonts of the tribe Dissopsalini. The older species, ''D. pyroclasticus'', lived in Kenya during the middle Miocene, while the type species, ''D. carnifex'', lived in Pakistan and India during the middle to late Miocene.Barry, J. C. (1988.) "''Dissopsalis'', a middle and late Miocene proviverrine creodont (Mammalia) from Pakistan and Kenya." ''Journal of Vertebrate Paleontology'' 48(1): 25–45 ''Dissopsalis'' is the last known hyaenodont genus. It lived alongside its relative ''Hyaenodon weilini'', a member of the very successful genus ''Hyaenodon ''Hyaenodon'' ("hyena-tooth") is an extinct genus of carnivorous hyaenodont mammals from tribe Hyaenodontini, within subfamily Hyaenodontinae in family Hyaenodontidae,Malcolm C. McKenna, Susan K. Bell (1997."Classification of Mammals: Above t ...'', during the Miocene in China. ''Dissopsalis'' survived to the end of the Miocene, whereas ''H. weilini'' did ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinopa
''Sinopa'' ("swift fox") is a genus of hyaenodontid mammal from family Sinopidae, that lived in North America and Asia during the early to middle Eocene. Description ''Sinopa'' was a small genus of hyaenodontid mammals. Its carnassial teeth were the second upper molar and the lower third. ''Sinopa'' species had an estimated weight of 1.33 to 13.97 kilograms. The type specimen was found in the Bridger formation in Uinta County, Wyoming, and existed 50.3 to 46.2 million years ago. Taxonomy The putative African species ''"Sinopa" ethiopica'' from Egypt was considered a species of '' Metasinopa'' by Savage (1965), although Holroyd (1994) considered it a potential new genus related to '' Quasiapterodon''.Lewis, M. E., Morlo, M. (2010): Creodonta. – In : Werdelin, L., Sanders, W. (eds), Cenozoic Mammals of Africa. University of California Press, Berkeley, pp. 543–560. https://doi.org/10.1525/california/9780520257214.003.0026 Phylogeny The phylogenetic relationships of genus '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene
The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from the Ancient Greek (''olígos'', "few") and (''kainós'', "new"), and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the 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" ... Epoch. The Oligocene is the third and final epoch of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
