| "Pleistocene remains of the lion-like cat Panthera atrox from the Yukon Territory and northern Alaska" | Bwana Game : the life story of George Adamson |
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| Mystery Cats of the World | Proceedings of the Royal Society B: Biological Sciences |
| No distinction was made between 'l' and 'r' | |
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| Bauer H, Van Der Merwe S 2002 | "Lost populations and preserving genetic diversity in the lion Panthera leo: Implications for its ex situ conservation" |
"The North African Barbary lion and the Atlas Lion Project".