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Rather than a juvenile of a known species, several fossilized bones represent a new species – and shed light on the question of whether dinosaurs were already in decline before disaster struck.
Proportionally, tyrannosaurs had longer feet than any other big carnivorous dinosaur, but the uniqueness of their feet didn’t stop at their long stride. The
The Tyrannosaurus rex is one of the most well known of all the dinosaurs, particularly notable for its ferocious jaws. Adult tyrannosaurs – including the species T. rex – used a “puncture-pull” biting technique, in which they bit down and swallowed chunks of flesh and bone. But, it turns out, young tyrannosaurs didn’t possess the deep jaws necessary to undertake such a bite. Their jaws weren’t equipped to deal with the significant stresses of biting in this way. In a new study, my colleague Eric Snively of Oklahoma State University and I examined how tyrannosaur feeding strate...