Preliminary palynological zonation of the Chinle Formation, Southwestern USA, and its correlation to the Newark Supergroup (Eastern USA).
Reference:
Litwin,R.J. et al. (1991)
Preliminary palynological zonation of the Chinle Formation, Southwestern USA, and its correlation to the Newark Supergroup (Eastern USA). Review of Palaeobotany and Palynology
Vol. 68 # 3 P. 269- 287