Top photo (IMAGE) Aarhus University Caption Springtails are ancient. They first appeared more than 400 million years ago and probably share an ancestor with insects. Since then, however, they have evolved in a different direction than insects. And we now know they were the first animal to develop antifreeze proteins. Credit Philippe Garcelon / Wikimedia Commons Usage Restrictions Credit must be given to the creator. License CC BY 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.