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The American lion (Panthera atrox (/ ˈ p æ n θ ər ə ˈ æ t r ɒ k s /), with the species name meaning "savage" or "cruel", also called the North American lion) is an extinct pantherine cat native to North America during the Late Pleistocene from around 130,000 to 12,800 years ago.
Early members of the cave lion lineage assigned to Panthera fossilis during the Middle Pleistocene were considerably larger than individuals of P. spelaea from the Last Glacial Period and modern lions, with some of these individuals having an estimated length of 2.5–2.9 metres (8.2–9.5 ft), shoulder height of 1.4–1.5 metres (4.6–4.9 ft ...
The history of lions in Europe is part of the wider history of the lion species complex. The rediscovery and confirmation of their presence in Europe , already known by myths , historical accounts and ancient art , was made possible by the finds of fossils of Pleistocene , Holocene and Ancient lions excavated in Europe since the early 19th century.
The national monument is now considered a walk-in park, open to the public year-round from 9 a.m. to 5 p.m., with the exception of Thanksgiving and Christmas Day.
Panthera fossilis (also known as Panthera leo fossilis or Panthera spelaea fossilis) is an extinct species of cat belonging to the genus Panthera, known from remains found in Eurasia spanning the Middle Pleistocene and possibly into the Early Pleistocene.
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* Jurassic National Monument in the San Rafael Swell: Morrison Formation: Jurassic: North America: US: Utah: Non- Avian Dinosaurs and other vertebrates Clarno Unit, John Day Fossil Beds National Monument: Clarno Formation: Eocene: North America: US: Oregon: Plants: tropical and subtropical nuts, fruits, roots, branches, and seeds Zion National Park
During the Late Pleistocene, the sinkhole at Mammoth Site of Hot Springs formed when a cavern in the Minnelusa Limestone collapsed.This cavern collapse created a steep-sided sinkhole, that was at least 65 feet (20 m) deep and 120 feet (37 m) by 150 feet (46 m) wide at the surface within a Pleistocene terrace underlain by Spearfish Shale.