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Globorotalia (Truncorotalia) crassula Cushman & Steward 1930 from: Kennett, J.Srinivasan, M.S. (1983): Neogene Planktonic Foraminifera - A Phylogenetic Atlas.
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Species Globorotalia (Truncorotalia) crassula Cushman & Steward 1930


Alternative name:
Diagnosis / Definition:
Kennett & Srinivasan (1983):
Test very low trochospiral, spiral side almost flat, umbilical side convex; equatorial periphery obulate, subquadrate, axial periphery subacute to subrounded, periph- eral thickening suggests presence of an imperforate keel; four chambers in the final whorl, increasing uniformly in size as added, more inflated on umbilical side than on spiral side; sutures on spiral side curved and gently depressed, on umbilical side radial to curved and depressed; surface finely perforate, pustulate on early chambers; umbilicus narrow, aperture interiomarginal, umbilical-extraumbilical, a low arch with a lip.
Discussion / Comments:
Kennett & Srinivasan (1983):
Gr. (T.) crassula differs from Gr. (H.) cibaoensis by its more nearly planoconvex test and more strongly angled periphery.
Synonym list:
Kennett & Srinivasan (1983):
1930 Globorotalia crassula Cushman & Steward. - Cushman et al. : p.77 pl 7 figs 1a-c
Was used in synonym list of:
References:

Cushman,J.A.; Stewart,R.E. and Stewart,K.C. (1930):
Tertiary foraminifera from Humboldt County alifornia. A preliminary survey of the fauna . Trans. San Diego Soc. Nat. Hist. Vol. 6 p. 41-94

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

Anonymous: Unedited TaxonConcept data
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