none
Geological Time: Paleogene Eocene
holotype
View of a specimen of Ammobaculites expansus Plummer, 1933
The identification is based upon:
, : Plummer H.J. 1933 Foraminiferal evidence of the Midway-Wilcox contact in Texas. Univ. Texas Bull., 3201 (1933), pp. 51-68. Plate , Fig.
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