"New UC Riverside-led research settles a longstanding debate about whether the most ancient animal communities were deliberately mobile. It turns out they were, because they were hungry. 

“This is the first time in the fossil record we see an animal moving to get food,” said study lead Scott Evans, a UCR paleontology doctoral candidate. 

Evans’ team demonstrated that the 550-million-year-old ocean-dwelling creatures moved on their own rather than being pushed around by waves or weather. The research answers questions about when, why and how animals first developed mobility."

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