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Species Globorotalia (Globorotalia) lenguaensis Bolli 1957


Alternative name:
Globorotalia lenguaensis Bolli 1957
Diagnosis / Definition:
Kennett & Srinivasan (1983):
Test small, low trochospiral, equally biconvex, equatorial periphery almost circular, slightly lobulate, axial periphery subangular to angular; chambers strongly compressed, six to seven in the final whorl, increasing moderately in size as added; sutures on spiral side strongly curved, depressed; on umbilical side sinuously radial, depressed; surface smooth, densely perforate, imperforate on the peripheral margin; umbilicus almost closed, aperture interiomarginal, extraumbilical-umbilical, a low slit bordered by a pronounced, wide lip.
Discussion / Comments:
Kennett & Srinivasan (1983):
Gr. (Gr.) lenguaensis is distinguished by its small size, circular equatorial profile, and the smooth and densely perforate test.
Synonym list:
Kennett & Srinivasan (1983):
1957 Globorotalia lenguaensis Bolli. - Bolli : p.120 pl 29 figs 5a-c
Was used in synonym list of:
Globorotalia lenguaensis Bolli 1957
References:

Bolli,H.M. (1957):
Planktonic foraminifera from the Oligocene-Miocene Cipero and Lengua formations of Trinidad, B.W.I..
In: Studies in Foraminifery, Bulletin of the U.S. National Museum Vol. 215 Eds: Loeblich, A.R.Tappan, H.Beckmann, J.P.Bolli, H.M.Gallitelli, E.M.Troelsen, J.C. p. 97-123

Kennett,J. and Srinivasan,M.S. (1983):
Neogene Planktonic Foraminifera - A Phylogenetic Atlas.

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