Cunningtoniceras arizonense n sp., a large acanthoceratid ammonite from the Upper Cenomanian (Cretaceous) of eastern central Arizona
Kirkland, J.I., and Cobban, W.A., 1986, Cunningtoniceras arizonense n sp., a large acanthoceratid ammonite from the Upper Cenomanian (Cretaceous) of eastern central Arizona: Hunteria, v. 1, no. 1, p. 1-14.