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Geological Time: Paleogene Oligocene
holotype
View of a specimen of Cibicidoides mexicanus (Nuttall, 1932)
The identification is based upon:
, : Nuttall, W. L. F. (1932). Lower Oligocene foraminifera from Mexico. Journal of Paleontology. 6(1): 3-35. Plate , Fig.
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