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Posted by Mokele on April 12, 2003 at 04:58:40:
In Reply to: Croc skeleton? posted by Burmuda on April 10, 2003 at 21:01:20:
Actually, T. rex has been shown to have actively hunted. A fossilized duckbill was found which had a massive injury to its tail that, given the location and time period, could only have come from T. rex. What shows rex was an active predator was that the bone shows ample evidence of healing, meaning the duckbill was alive when attacked, and that it escaped and healed.
Also, there's no such thing as an exclusively scavenging terrestrial animal. They just can't cover enough distance in enough time to keep themselves fed. Even hyenas kill for themselves most of the time. Conversely, very few predators will turn their nose up at a free meal.
I can provide a reference on the duckbill fossil if you want, but right now I've been up for 22 hours, and don't feel like it.