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King, Dunbar & Cloud |
1944 |
Geology and Paleontology of the Permian area northwest of Las Delicias, southwestern Coahuila, Mexico. [King,R.E., Dunbar,C.O., Cloud,P. & Miller,A.K.]
Geological Society of America Special Papers, 52: X + 1-172, 29 text-figs., 45 pls.
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Nassichuk |
1977 |
Upper Permian ammonoids from the Cache Creek Group in Western Canada.
Journal of Paleontology, 51 (3): 557-590, fig.1-20, tab.1-7, pl.1-3; Tulsa, Okla.
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