The American lion – also known as the American cave lion is an extinct subspecies of lion that lived in North America during the Pleistocene epoch (340,000 to 11,000 years ago). Genetic analysis has revealed that it was the sister lineage to the Eurasian cave lion . It was part of the Pleistocene megafauna, a wide variety of large mammals that lived at the time. The majority of American lion fossils have come from the La Brea Tar Pits. The American lion was about 25% larger than the modern African lion, making it one of the largest known felids.