Foraminifera source details
Cushman, J. A.; Thomas, N. L. (1929). Abundant Foraminifera of the East Texas Greensands. Journal of Paleontology. 3: 176-184.
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Cushman, J. A.; Thomas, N. L.
1929
Abundant Foraminifera of the East Texas Greensands
Journal of Paleontology
3: 176-184
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Sigmomorpha (Sigmomorphina) pseudoregularis Cushman & Thomas, 1929 † accepted as Sigmomorphina pseudoregularis (Cushman & Thomas, 1929) † (original description)
Uvigerina parvula Cushman & Thomas, 1929 † (original description)
Uvigerina parvula Cushman & Thomas, 1929 † (original description)