Clues to the diet of some dinosaurs can be found by analysing fossils for their stomach contents.
Sinocalliopteryx gigas was around the size of a wolf and lived 120 million years ago in wet woodland regions. Scientists examining fossils of the creature have been able to determine from the contents of its stomach that it would have preyed on other animals up to a third its size such as crow-sized birds and other, smaller dinosaurs.
"Stomach remains are evidence of actual interactions between animals, which is extremely rare in the fossil record," said researcher Phil Bell. "We're lucky to find one or two bones of anything; to get a specimen with the remains of its last meal or meals is pretty cool."
"Dinosaur fossils found with the bones of birds and small dinosaurs in their stomachs reveal the beasts may have been adept hunters capable of downing prey more than a third their own size, researchers say."
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Source: Live Science
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