Add Yahoo as a preferred source to see more of our stories on Google. Researchers have discovered the oldest known example of a predator-prey “arms race,” based on their study of ancient fossils. This ...

A study led by researchers at the American Museum of Natural History presents the oldest known example in the fossil record of an evolutionary arms race. These 517-million-year-old predator-prey ...

More than half a billion years ago, mystery predators bored into shelled animals' defensive casings. Some of the holey shells ...

Interactions between hard-shelled marine mollusks such as clams and snails and their predators play a critical but largely unseen role in shaping coastal ecosystems. These organisms help stabilize ...