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Geological Time: Paleogene Eocene
holotype
View of a specimen of Asterigerina simiensis Cushman & Mcmasters, 1936
The identification is based upon:
, : Cushman, J. A.; McMasters, J. H. (1936). Middle Eocene Foraminifera from the Llajas Formation, Ventura County, California. Journal of Paleontology. 10: 497-517. Plate , Fig.
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