1. Embedded in the canyons are fossils of extinct creatures like giant camels, mastodons, short-faced bears and sabertooth cats. 2. The new sabertooth cat combines some of the deadliest features of the others. 3. What the amateurs had found was a third category of sabertooth cat. 4. When he realized they went together, he said, paleontologists had to characterize a whole new group of sabertooth cats. |
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