predation

The 500 Million Year Rise of ‘Bullies’

Fri, 06/16/2017 - 8:46am -- yountj
Assistant Professor of Geological Sciences John Huntley

Assistant Professor of Geological Sciences John Huntley says, "Our work gives new insight into the question of whether or how ecological processes, the daily struggle for life, influence macroevolutionary processes in deep time, which is a significant question still being examined.”

COLUMBIA, Mo. --- 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.

Tags: 
geology
macroevolution
predation
ecology
fossils

The Early Trilobite Gets the Worm

Fri, 01/29/2016 - 3:39pm -- yountj
Tara Selly

Researchers who study evidence of predatory behavior in the fossil record generally look for drill holes, repair scars, bite marks, and other signs of predation in fossilized skeletons.  But a team of researchers at the University of Missouri has found fossil “snapshots” of predators caught in the act of feeding on their prey. Assistant Professor of Geological Sciences Jim Schiffbauer says predation is a significant factor in evolution, and this discovery represents one of the earliest examples of sophisticated predatory behavior.

Tags: 
geology
evolution
predation
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