Jenkins, D. Draham; Orr, W. N. (1973): Globigerina utilisindex n. sp. from the upper Eocene-Oligocene of the eastern equatorial Pacific. Cushman Foundation for Foraminiferal Research, Ithaca, NY, United States, Journal of Foraminiferal Research, 3 (3), 133-136, georefid:1974-014687

Descriptions and illustrations from deep-sea cores, DSDP legs VIII and IX
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