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Heterohelix costulata Ehrenberg 1843 from: Van Eijden, A.J.M.Smit, J. (1991): Eastern Indian Ocean Cretaceous and Paleogene quantitative biostratigraphy. In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 121 Eds: Weissel, J.Peirce, J.Taylor, E.Alt, J. p. 77-123
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Species Heterohelix costulata Ehrenberg 1843



Discussion / Comments:
Van Eijden & Smit (1991):
Remarks. H. costulata is extremely rare in the upper Maestrichtian at Site 752. Its local range is paleoenvironmentally controlled, and elsewhere it is known to range from the middle Campanian to the top of the Maestrichtian.
Synonym list:
Van Eijden & Smit (1991):
1938 Guembelina costulata Cushman. - Cushman : 16-17 pl. 3, figs. 7a-9
1991 Heterohelix costulata Ehrenberg. - Van Eijden & Smit :
References:

Cushman,J.A. (1938):
Cretaceous species of Guembelina and related genera . Cushman Lab. Foraminiferal Res. Contrib. Vol. 14 p. 2-28

Van Eijden,A.J.M. and Smit,J. (1991):
Eastern Indian Ocean Cretaceous and Paleogene quantitative biostratigraphy.
In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 121 Eds: Weissel, J.Peirce, J.Taylor, E.Alt, J. p. 77-123

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