Dickerson, R.E. & Kew, W.S.W. (1917). The fauna of a medial Tertiary formation and the associated horizons of northeastern Mexico. Proceedings of the California Academy of Sciences, Series 4. 7: 125-156.
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Dickerson, R.E. & Kew, W.S.W.
1917
The fauna of a medial Tertiary formation and the associated horizons of northeastern Mexico
Proceedings of the California Academy of Sciences, Series 4