Holes drilled in shells point to bigger predators picking on small prey

Holes drilled in shells point to bigger predators picking on small prey 06/21/2017 10:16 AM 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 https://www.floridamuseum.ufl.edu/science/drill-holes-in-fossil-shells-point-to-bigger-predators-picking-on-small-prey/ Source Florida Museum of Natural History 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