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.
The study, published...
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https://skpsoft.com/science/holes-drilled-in-shells-point-to-bigger-predators-picking-on-small-prey-sciencedaily/
Friday, June 16, 2017
Holes drilled in shells point to bigger predators picking on small prey -- ScienceDaily
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