King of the beast soaks up some sun (image) Field Museum Caption This lion lives in the Alexandria Zoological Park in Alexandria, La. The new research helps explain the correlation between climate and manes and may lead to revisions in the lion's family tree. For example, maneless Ice Age lions were once thought to be a separate subspecies of the African lion, aka Panthera leo. But now scientists know that P. leo retains longer, denser manes in colder climates, so they may determine that the Ice Age maneless lion was a completely different species than P. leo. Credit Photo by Bruce D. Patterson, Courtesy of The Field Museum Usage Restrictions For media only, and only in connection with the story described in this press release. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.