Everything about Panthera leo atrox.
The lion evolved between 1 million and 800,000 years ago in Africa, from where it spread throughout the Holarctic region. The earliest fossil record in Europe was found near Pakefield in the United Kingdom and is about 680,000 years old. From this lion, the late Pleistocene Eurasian cave lion probably derived about 300,000 years ago. Fossil remains found in the Cromer Forest Bed suggest it was of a gigantic size and represented a lineage that was genetically isolated and highly distinct from lions in Africa and Asia. It was distributed throughout Europe, across Siberia and into western Alaska via the Beringian landmass. The gradual formation of dense forest likely caused the decline of its geographic range near the end of the Late Pleistocene. Lion bones are frequently encountered in cave deposits from Eemian times, suggesting the cave lion survived in the Balkans and Asia Minor. There was probably a continuous population extending into India. Fossil lion remains were found in Pleistocene deposits in West Bengal. It became extinct about 10,000 years ago at the end of the last glacial period without mitochondrial descendants on other continents.
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