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. Life reconstruction of Bolg amondol. Image credit: Cullen Townsend. Bolg amondol lived in North America during the Campanian age of the Cretaceous...
