Ben Normark (IMAGE) University of Massachusetts Amherst Caption Professor Benjamin Normark will spend the fall 2016 semester in Mexico documenting the spread of the insect, cycad aulacaspis scale. It is an invasive species that threatens the country's cycads, plants sometimes called 'living fossils' because they have changed little in the last 280 million years. Credit UMass Amherst Usage Restrictions None License Licensed content 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.