Like living animals, fossil remains of once-living animals are classified and grouped according to their relationships to each other and to their ancestors.
Family: Felidae (lion, tiger, jaguar, leopard, cougar, cheetah, lynx, caracal, domestic cat and many fossil taxa)
Species: Panthera atrox - American lion (extinct)
Describer: Leidy 1853 for Panthera atrox. American Philosophical Society Transactions 10:319-321
Burger et al. (2004)
Turner (1987, 1997)