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Trotting with emus to walk with dinosaurs

modeled and even made into physical prototypes with rapid prototyping technology.

The bigger picture is also important and telling at the Red Gulch Dinosaur Tracksite, said Breitaupt. For instance, it appears that the dinosaurs were traveling along a tidal flat, perhaps in family groups, since there are juvenile and adult tracks. If so, that could infer some sort of parental care, he said. At very least the tracks seem to support the idea that the dinosaurs were social animals, just like modern birds.

Breithaupt remains cautious about over-interpreting the tracks, however.

"Too often people will look at fossil tracks and start making interpretations," he said. "I was just very uncomfortable with all the arm-waving. We needed to just spend some time figuring it out and looking at modern animals such as emus which prove to be great modern proxies for the extinct dinosaurs."

WHERE & WHEN WALKING WITH EMUS: INSIGHTS INTO DINSOAUR TRACKING IN THE 21st CENTURY Wednesday, October 25, 2006, 3:30 p.m. Pennsylvania Convention Center: 204 A
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Source:Geological Society of America


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