Kennett & Srinivasan (1983):
Test very low trochospiral, equatorial periphery slightly lobulate, axial periphery rounded with a tendency to become
subangular, umbilical side more convex than the spiral; chambers ovate, five to six in the final whorl, increasing slowly in size as added; sutures on spiral and ubilical side
strongly curved, slightly depressed; surface smooth with evenly scattered pores: umbilicus narrow; aperture nteriomarginal, extraumbilical-umbilical, low arch bordered by a distinct lip. |
Blow,W.H. and Banner,F.T. (1966): The morphology, taxonomy and biostratigraphy of Globorotalia barisanensis LeRoy, Globorotalia fohsi Cushman and Ellisor, and related taxa . Micropaleontology Vol. 12(3) p. 286-302
Kennett,J. and Srinivasan,M.S. (1983): Neogene Planktonic Foraminifera - A Phylogenetic Atlas.
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