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Current identification:
Original Description
Extra details from original publication
Variation. - Expressed in differing test dimensions: very large tests (up to 0.45 mm.) with a large broadening coefficient (up to 1.5) are commonly found.
Comparison. - The specimen figured by Loeblich and Tappan (1957) as G. triloculinoides in association with foraminifera from the Coal Bluff Formation is referred to the species described. In both the American specimen of this species and the specimens in the material studied, besides the three chambers the half-chamber takes part in building the last whorl; the maximum width of the spire in the last whorl is reached in the area of the next-to-last chamber, the aperture is oblique, slitlike. The same features also characterize the test described by White (1928) as G. bulloides. Globigerina crassa differs from G. gerpegensis by having a broader penultimate chamber and a subtriangular test.
Loeblich, A. R. & Tappan, H. (1957b). Planktonic foraminifera of Paleocene and early Eocene Age from the Gulf and Atlantic coastal plains. In, Loeblich, A. R. , Jr., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli, E. & Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin . 215: 173-198. gs Shutskaya, E. K. (1970a). Morphologic groups and descriptions of species of Globigerina and Acarinina in the lower Paleogene of the Crimea, the Caucasus Foreland, and western Central Asia. Trudy Vsesoyuznego Neftyanogo Nauchno-Issledovatel'skogo Geologo-Razvedochnogo Instituta (VNIGRI). 69: 79-113. gs White, M. P. (1928). Some Index Foraminifera of the Tampico Embayment Area of Mexico. Journal of Paleontology. 2(3): 177-215. gs References:
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Globigerina crassa compiled by the pforams@mikrotax project team viewed: 14-2-2025
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