Animals get bigger as they evolve, on land and in the sea

February 20, 2015 4:38 AM

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But a new study purports that one component of evolution -- one trend -- is consistent: species keep getting bigger and bigger. According to scientists at Stanford University, marine animal lineages evolve to feature larger species over time.

It seems obvious. Apes and humans, and the other larger hunters and gatherers that dominate the modern landscape, are certainly much bigger than the microorganisms that emerged from the primordial ooze of ancient Earth and jumpstarted it all.

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