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On the perilous Jurassic Period landscape of western North America, it was good to be big. Paleontologists have conducted a study scrutinizing bite marks left by meat-eating dinosaurs on the bones of sauropods - the familiar plant-eating dinosaurs with long necks, long tails and four pillar-like legs that were the largest land animals around - about 150 million years ago. Of about 600 bones checked, bite marks - often deep grooves left in stout bone - were detected on 68 of them, spanning 40 individual sauropods and representing at least nine species.

Western university of health sciencesUnited statesQueen maryMathew wedelRosalba obrienUniversity of health sciencesJurassic periodNorth americaDavid honeQueen mary universityPeerj lifeWestern universityHealth sciencesMorrison formationWill dunhamRosalbao brien