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(d'Orbigny, 1839)

Non-spinose, with 4 chambers in last whorl and scattered pustules on older chambers. Usually rather smooth-walled; aperture extraumbilical - peripheral. Low trochospiral, bordered by distinct peripheral keel. Resembles Globorotalia scitula, but with fewer chambers, contour more lobulate.

Ref.: Glaçon et al. (1973), Boltovskoy (1974a), Hemleben et al. (1985).

Distribution: Scarce but widely distributed south of 20°S in subtropical to temperate water masses. Deep- and long-living foraminifer which usually reproduces in surface waters during austral mid-spring.

Globorotalia hirsuta