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Species Globorotalia (Truncorotalia) crassula Cushman & Steward 1930 | ||||||
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| Diagnosis / Definition: | ||||||
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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. |
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| Discussion / Comments: | ||||||
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Kennett & Srinivasan (1983): Gr. (T.) crassula differs from Gr. (H.) cibaoensis by its more nearly planoconvex test and more strongly angled periphery. |
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| Kennett & Srinivasan (1983): 1930 Globorotalia crassula Cushman & Steward. - Cushman et al. : p.77 pl 7 figs 1a-c
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| References: | ||||||
Cushman,J.A.; Stewart,R.E. and Stewart,K.C. (1930): Kennett,J. and Srinivasan,M.S. (1983): |
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| Anonymous: Unedited TaxonConcept data | ||||||
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