7 



Williams, Kenneth L. See McCranie, James R. 1989. 

 Wilson, Larry David. See McCranie, James R. 1981. 

 . See McCranie, James R. et al. 1989. 



Yatkola , Daniel A. 1976. Fossil Heloderma (Reptilia, Helodermatidae). No. 51:1-14. 



