JOHN SIBBICK / SCIENCE PHOTO LIBRARY JOHN SIBBICK / SCIENCE PHOTO LIBRARY
Prehistoric proto-mammals. Artwork of proto-mammals (synapsids) Anteosaurus (carnivorous, left) and Moschops (herbivorous, right) in a predator-prey confrontation. Both of these proto-mammals lived during the late Permian about 250 million years ago. Their fossil remains have been found in South Africa. Artwork by the British illustrator John Sibbick.
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