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Armored, Large-Bodied Lizards Lived alongside Dinosaurs in Cretaceous North America

New fossilized specimens of monstersaurs -- including a previously unknown genus and species, Bolg amondol -- from the Kaiparowits Formation of Grand Staircase-Escalante National Monument in southern Utah reveal unexpected richness of these large-bodied lizards in Late Cretaceous North America.

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