Some predatory dinosaurs used guile and agility to outwit their feathered prey according to research.
The work, by a Canadian-Chinese team, is published in PLoS One.
Researchers studied the fossil remains of two Sinocalliopteryx dinosaurs and found they had been feasting on primitive birds and flying dinosaurs.
The prey could have been scavenged, but they argue that the presence of several birds in the stomach of one fossil implied the prey was actively hunted.
The researchers suggested that to catch their prey, the dinosaurs used ambush hunting techniques similar to modern cats.
Determining how dinosaurs lived is difficult - much of what we know is conjecture; built from a smidgen of material evidence and prodigious amounts of informed opinion.
Fossils provide one of
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