Everything about The American Lion totally explained
The
American lion (Panthera leo atrox) also known as the
North American lion or
American cave lion, is an
extinct feline known from
fossils. It was one of the largest subspecies of lion ever to have existed, comparable in size to the Early Middle Pleistocene primitive cave lion,
Panthera leo fossilis, and about twenty-five percent larger than the modern African
lion, though some estimates of the weight of this animal are as high as 300 kg.
Description
The American Lion is an extinct animal which originated in North America and went on to colonize part of South America as part of the
Great American Interchange. The body length of the American lion is estimated to have been 1.6-2.5 m (5.25-8.20 feet). Thus it was comparable in size to its close relative, the extinct lion,
Panthera leo fossilis, or the modern species of
Siberian Tiger, but still smaller than their contemporary competitor for prey, the
short-faced bear, which was the largest
carnivore of their era.
Approximately one hundred specimens of American lions have been recovered from the
La Brea Tar Pits, in
Los Angeles, so their body structure is well known. The features and teeth of the extinct American lion strongly resemble modern lions, but they were considerably larger. They probably were plain coloured, and males would have lacked a mane, as it's supposed for their close relatives, the
Cave Lion, although some may have had small manes.
Range
South of Alaska, the American lion first appeared during the
Sangamonian (the last
interglacial). After that it was widespread in the Americas from Alaska to Peru, although it was absent from eastern North America and peninsular Florida. or that they used different hunting strategies than
Smilodon.
Environment
In some areas of its range, the American lion lived under cold climatic conditions. They probably used
caves or fissures for shelter from the cold weather. They may have lined their dens with grass or leaves, as the
Siberian tiger does, another great cat that currently lives in the north.
There are fewer American lions in the La Brea tar pits than other predators such as saber-toothed cats (
Smilodon fatalis) or
dire wolves (
Canis dirus), which suggests they may have been smart enough to avoid the hazard or their hunting methods and strategies didn't include hunting entrapped prey. American lions likely preyed on
deer, North American
horses (now extinct),
American Bison,
mammoths, and other large,
herbivorous animals.
Their extinction may have been related to the
Holocene extinction event, which wiped out most of the prey of
megafauna. Their bones have been found among the refuse of Paleolithic
Native Americans, so hunting by humans may have contributed to their demise as well.
A replica of the jaw of the first specimen of American lion discovered can be seen in the hand of a statue of
paleontologist Joseph Leidy, which is currently standing outside the
Academy of Natural Sciences in
Philadelphia.
Classification
Normally, the American lion is considered a
subspecies of
lion, with the scientific name,
Panthera leo atrox, which means
cruel or
fearsome lion in
Latin); but occasionally it's considered a
species in its own right, under the name,
Panthera atrox. At least one authority considers the cave lion to be more closely related to the
tiger citing a comparison of
skull shapes (Groiss, 1996), however, recent genetic research demonstrates that the American lion has a closer genetic relationship to the modern lion.
Further Information
Get more info on 'American Lion'.
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