Hyaenodonts

	Hyaenodonts 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'' †''Cynohyaenodo ... [...More Info...] [...Related Items...] OR:** [Wikipedia] [Google] [Baidu]
picture info	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 that di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	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]
	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]
	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 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 ... Family: † Proviverridae 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]
	Cynohyaenodon ''Cynohyaenodon'' ("dog-like ''Hyaenodon''") is an extinct paraphyletic genus of hyaenodontid mammals from family Hyaenodontidae that lived during the early to middle Eocene in Europe. Phylogeny The phylogenetic relationships of genus ''Cynohyaenodon'' are shown in the following cladogram. See also * Mammal classification * 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 ... References Hyaenodonts Eocene mammals Fossils of France Prehistoric placental genera {{paleo-mammal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Eurotherium ''Eurotherium'' ("european beast") is an extinct paraphyletic genus of hyaenodontid mammals from family Hyaenodontidae that lived during the early to middle Eocene in Europe. Phylogeny The phylogenetic relationships of genus ''Eurotherium'' are shown in the following cladogram. See also * Mammal classification * 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 ... References Hyaenodonts Eocene mammals Prehistoric placental genera {{paleo-mammal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Eocene The Eocene ( ) Epoch is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', "dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope Carbon-13, 13C in the atmosphere was exceptionally low in comparison with the more common isotope Carbon-12, 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Popigai impact structure, Siberia and in what is now ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]