Drill holes in fossil shells point to bigger predators picking on small prey

Drill holes in fossil shells point to bigger predators picking on small prey 06/21/2017 02:22 PM EDT The drill holes left in fossil shells by hunters such as snails and slugs show marine predators have grown steadily bigger and more powerful over time but stuck to picking off small prey, rather than using their added heft to pursue larger quarry, new research shows. Full story at http://news.ufl.edu/articles/2017/06/drill-holes-in-fossil-shells-point-to-bigger-predators-picking-on-small-prey.php Source University of Florida This is an NSF News From the Field item.   Follow NSF:  This email was sent using GovDelivery Communications Cloud on behalf of: National Science Foundation Update · 4201 Wilson Boulevard · Arlington, VA 22230 · 703-292-5111