Dave Easterla, left, Distinguished University Professor Emeritus of Biology at Northwest Missouri State University and Matthew Hill, associate professor of anthropology at Iowa State, with a fossilized complete skull from a sabertooth cat from southwest Iowa. (IMAGE)
Caption
Dave Easterla, left, Distinguished University Professor Emeritus of Biology at Northwest Missouri State University and Matthew Hill, associate professor of anthropology at Iowa State, with a fossilized complete skull from a sabertooth cat from southwest Iowa.
Credit
Christopher Gannon/Iowa State University.
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