Nydam 2013. Lizards and snakes from the Cenomanian through Campanian of southern Utah: filling the gap in the fossil record of Squamata from the Late Cretaceous of the western interior of North America. At the top of the grand staircase: the late Cretaceous of Southern Utah., Indiana University Press, Bloomington, 2013: i-xvi, 1-634. Chapter pagination: 370-423