claim: We have had ice ages and warmer periods when alligators were found in Spitzbergen.
evidence: The current geological period, the Quaternary, which began about 2.6 million years ago and extends into the present, is marked by warm and cold episodes, cold phases called glacials ( Quaternary ice age ) lasting about 100,000 years, and which are then interrupted by the warmer interglacials which lasted about 10,000–15,000 years.