Lower Austin Chalk, Grayson County, Texas
American South USA
Geological Time: Cretaceous Upper Cretaceous
the SEM image is provided by Dr.
View of a specimen of Hastigerinoides alexanderi (Cushman, 1931)
The identification is based upon:
Georgescu, M. D., Huber, B., 2008: Taxonomic re-evaluation and phylogeny of the stellate planktonic foraminiferal genus Hastigerinoides Broennimann, 1952. Journal of Foraminiferal Research 38 (1) page 52-58. Plate 1, Fig. 2
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