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Prolimnocyon
''Prolimnocyon'' ("before ''Limnocyon''") is an extinct paraphyletic genus of limnocyonid hyaenodonts that lived in Asia and North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ... during the late Paleocene to middle Eocene. ''Prolimnocyon chowi'' is the earliest known member of the hyaenodontid family Limnocyonidae. Phylogeny The phylogenetic relationships of genus ''Prolimnocyon'' are shown in the following cladogram.M. Morlo & G. F. Gunnell (2003."Small Limnocyonines (Hyaenodontidae, Mammalia) From the Bridgerian Middle Eocene of Wyoming: ''Thinocyon'', ''Prolimnocyon'' And ''Iridodon'', New Genus."Contributions from the Museum of Paleontology, University of Michigan 31(2):43-78M. Morlo and G. F. Gunnell (2005.) "New species of ''Limnocyon'' (Mammalia, Creodonta) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limnocyonidae
Limnocyonidae ("swamp dogs") is a family of extinct predatory mammals from extinct order Hyaenodonta. Fossil remains of these mammals are known from late Paleocene to late Eocene deposits in North America and Asia. Limnocyonids had only two molars in the upper and lower dentition. Classification and phylogeny Taxonomy * Family: †Limnocyonidae ** Genus: †'' Iridodon'' *** †''Iridodon datzae'' ** Genus: †''Limnocyon ''Limnocyon'' ("swamp dog") is an extinct paraphyletic genus of limnocyonid hyaenodonts that lived in North America during the middle Eocene. Fossils of this animal have been found in California, Utah and Wyoming Wyoming () is a U.S. sta ...'' (Paraphyly, paraphyletic genus) *** †''Limnocyon cuspidens'' *** †''Limnocyon potens'' *** †''Limnocyon verus'' ** Genus: †''Oxyaenodon'' *** †''Oxyaenodon dysodus'' ** Genus: †''Prolaena'' *** †''Prolaena parva'' ** Genus: †''Prolimnocyon'' (paraphyletic genus) *** †''Prolimnocyo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limnocyon
''Limnocyon'' ("swamp dog") is an extinct Paraphyly, paraphyletic genus of Limnocyonidae, limnocyonid Hyaenodonta, hyaenodonts that lived in North America during the middle Eocene. Fossils of this animal have been found in California, Utah and Wyoming. Description ''Limnocyon'' was a small omnivorous hyaenodontid, with some estimates placing it at less than 1 kg in weight. Like other limnocyonids, ''Limnocyon'' had only two molars in the upper and lower dentition. Phylogeny The phylogenetic relationships of genus ''Limnocyon'' are shown in the following cladogram.M. Morlo & G. F. Gunnell (2003."Small Limnocyonines (Hyaenodontidae, Mammalia) From the Bridgerian Middle Eocene of Wyoming: ''Thinocyon'', ''Prolimnocyon'' And ''Iridodon'', New Genus."Contributions from the Museum of Paleontology, University of Michigan 31(2):43-78 References Hyaenodonts Eocene mammals Eocene mammals of North America Eocene genus first appearances Fossil taxa described in 1872 Prehistoric p ... [...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] |
Indohyaenodontidae
Indohyaenodontidae ("indian ''Hyaenodonts''") is a family of extinct predatory mammals from extinct order Hyaenodonta. Fossil remains of these mammals are known from early to late Eocene deposits in Asia.R. S. Rana, K. Kumar, S. P. Zack, F. Solé, K. D. Rose, P. Missiaen, L. Singh, A. Sahni and T. Smith (2015."Craniodental and postcranial morphology of ''Indohyaenodon raoi'' from the early Eocene of India, and its implications for ecology, phylogeny, and biogeography of hyaenodontid mammals."Journal of Vertebrate Paleontology 35(5):e965308:1-22 Classification and phylogeny Taxonomy * Family: †Indohyaenodontidae ** Genus: †''Indohyaenodon ''Indohyaenodon'' ("indian ''Hyaenodon''") is a genus of extinct hyaenodont mammals from family Indohyaenodontidae, that lived during the early Eocene in India India, officially the Republic of India (Hindi: ), is a country in South Asia. ...'' *** †''Indohyaenodon raoi'' ** Genus: †'' Yarshea'' *** †''Yarshea cruenta'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinopidae
Sinopidae ("swift foxes") is a family of extinct predatory mammals from extinct order Hyaenodonta. Fossil remains of these mammals are known from early to middle Eocene deposits in North America, Europe and Asia. Classification and phylogeny Taxonomy * Family: †Sinopidae ** Genus: †'' Acarictis'' *** †''Acarictis ryani'' ** (unranked): †''Sinopa'' clade *** Genus: †'' Prototomus'' (paraphyletic genus) **** †''Prototomus deimos'' **** †''Prototomus girardoti'' **** †''Prototomus martis'' **** †''Prototomus minimus'' **** †''Prototomus phobos'' **** †''Prototomus robustus'' **** †''Prototomus secundarius'' **** †''Prototomus viverrinus'' *** Genus: †''Sinopa'' **** †''Sinopa jilinia'' **** †''Sinopa lania'' **** †''Sinopa longipes'' **** †''Sinopa major'' **** †''Sinopa minor'' **** †''Sinopa piercei'' **** †''Sinopa pungens'' **** †''Sinopa rapax'' **** †''Sinopa'' sp. A 'AMNH FM 11538'' *** ''Incertae sedis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaenodontoidea
Hyaenodontoidea ("hyena teeth") is a superfamily of extinct predatory mammals from extinct order Hyaenodonta. Fossil remains of these mammals are known from early Eocene to early Miocene deposits in North America, Europe and Asia. Classification and phylogeny Taxonomy * Superfamily: †Hyaenodontoidea ** Family: †Hyaenodontidae ** Family: †Proviverridae Proviverridae ("before civets") is a family of extinct predatory mammals from extinct superfamily Hyaenodontoidea within extinct order Hyaenodonta. Fossil remains of these mammals are known from early to late Eocene deposits in Europe. Classif ... Phylogeny The phylogenetic relationships of superfamily Hyaenodontoidea are shown in the following cladogram: References {{Hyaenodonta Hyaenodonts Paleogene mammals of North America Paleogene mammals of Asia Paleogene mammals of Europe Vertebrate superfamilies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrocyon
''Pyrocyon'' ("fire dog") is a genus of small carnivorous hyaenodontids that lived in North America during the early Eocene. Fossils of ''Pyrocyon'' have been found in Wyoming and Colorado Colorado (, other variants) is a state in the Mountain states, Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the wes .... Weight of ''Pyrocyon dioctetus'' has been estimated at around 2.6 kilograms. Phylogeny The phylogenetic relationships of genus ''Pyrocyon'' are shown in the following cladogram. References Hyaenodonts Eocene mammals Eocene mammals of North America Eocene genus first appearances Prehistoric placental genera {{paleo-mammal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galecyon
''Galecyon'' ("polecat-dog") is a genus of hyaenodonts that lived during the early Eocene in Europe and North America (found in the Clarks Fork and Powder River basins of Wyoming Wyoming () is a state in the Mountain West subregion of the Western United States. It is bordered by Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho to the west, Utah to the southwest, and Colorado to the sou ...). Description ''Galecyon'' had robust canines and short, deep jaws. Prior to 2015, little was known about its post-cranial skeleton. However, following the discovery of more complete fossils, it is now known to have been a primarily terrestrial animal weighing between , lacking the adaptations for climbing found in some of its close relatives. Phylogeny The phylogenetic relationships of genus ''Galecyon'' are shown in the following cladogram. References Hyaenodonts Eocene mammals Prehistoric mammals of North America Prehistoric mammals of Eu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleocene
The Paleocene, ( ) or Palaeocene, is a geological epoch that lasted from about 66 to 56 million years ago (mya). It is the first epoch of the Paleogene Period in the modern Cenozoic Era. The name is a combination of the Ancient Greek ''palaiós'' meaning "old" and the Eocene Epoch (which succeeds the Paleocene), translating to "the old part of the Eocene". The epoch is bracketed by two major events in Earth's history. The K–Pg extinction event, brought on by an asteroid impact and possibly volcanism, marked the beginning of the Paleocene and killed off 75% of living species, most famously the non-avian dinosaurs. The end of the epoch was marked by the Paleocene–Eocene Thermal Maximum (PETM), which was a major climatic event wherein about 2,500–4,500 gigatons of carbon were released into the atmosphere and ocean systems, causing a spike in global temperatures and ocean acidification. In the Paleocene, the continents of the Northern Hemisphere were still connected v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
