A POLYGLYPHANODONTINE LIZARD FROM THE MORENO HILL FORMATION (TURONIAN, UPPER CRETACEOUS), ZUNI BASIN, NEW MEXICO
The skull appears to be heavily acid-etched; the surfaces of the skull bones are damaged with fragments of unidentifiable bone cemented in the remaining matrix. The left dentary and maxilla are fairly complete, containing fourteen teeth in the dentary and nine teeth in the maxilla. A portion of the left jugal is preserved, but it is badly damaged.
The teeth exhibit a sharp cutting edge similar to other polyglyphanodontines and are transversely wide, suggesting it belongs to the subclade Polyglyphanodontini. With further analysis of the teeth, it could be possible to narrow down if the skull belongs to an existing taxon or a new taxon. The polyglyphanodontines Bicuspidon numerosus and Dicothodon moorensis are known from the somewhat older Mussentuchit Member (Cenomanian), Cedar Mountain Formation, Utah. Dicothodon cifellii has been found in the slightly younger Smoky Hollow Member (late Turonian), Straight Cliffs Formation, Utah. The heavy acid etching on the skull suggests it had been digested by either a theropod dinosaur or crocodylomorph, though further analysis is needed to explore this possibility.