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Hyaenodontidae ("hyena teeth") is a family of placental mammals in the extinct superfamily Hyaenodontoidea. 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.
Hyaenodon ("hyena-tooth") is an extinct genus of carnivorous placental mammals from extinct tribe Hyaenodontini within extinct subfamily Hyaenodontinae (in extinct family Hyaenodontidae), [19] that lived in Eurasia and North America from the middle Eocene, throughout the Oligocene, to the early Miocene.
Hyaenodonta ("hyena teeth") is an extinct order of hypercarnivorous placental mammals of clade Pan-Carnivora from mirorder Ferae. [ 6 ] [ 7 ] Hyaenodonts were important mammalian predators that arose during the early Paleocene in Europe [ 8 ] and persisted well into the late Miocene .
Hyaenodontinae ("hyena teeth") is an extinct subfamily of predatory placental 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. [3] [4] [5]
It’s not clear why the predators and prey decided to live in such close quarters with each other.
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. [15]
The remains — buried in layers of soil in the collapsed cave — contained the genetic material of cave bears, hyenas and 13 bones of early humans who died some 45,000 years ago.
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