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Species Globigerina spiralis Bolli 1957 | ||||||
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Diagnosis / Definition: | ||||||
Bolli (1957): Shape of test medium to high trochospiral, biconvex, spiral side distinctly convex, umbilical side less so; equatorial periphery lobate; axial periphery rounded. Wall calcareous, perforate, surface smooth. Chambers inflated, globular or slightly compressed laterally; about 15, arranged in 3 whorls; the 5 6 chambers of the last whorl increase moderately in size. Sutures on spiral side radial or slightly curved, depressed; on umbilical side radial, depressed. Umbilicus narrow, open. Apertures distinct arches with faint lips, interiomarginal, umbilical; that of last chamber in some specimens tends to an extraumbilical umbilical position. Coiling random. Largest diameter of holotype 0.28 mm. |
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Systematics: | ||||||
20 Genus Globigerina Species Globigerina spiralis 32 Ordo Foraminiferida Familia Globigerinidae Genus Globigerina Species Globigerina spiralis |
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Synonym list: | ||||||
Bolli (1957): 1957 Globigerina spiralis Bolli. - Bolli : pl. 16, figs. 16-18 new species
Van Eijden & Smit (1991): 1957 Globigerina spiralis Bolli. - Bolli : p.70 pl. 16, figs. 16-18
1991 Globigerina spiralis Bolli. - Van Eijden & Smit : p.111
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Was used in synonym list of: | ||||||
References: | ||||||
Bolli,H.M. (1957): Bolli,H.M. (1957): Van Eijden,A.J.M. and Smit,J. (1991): |
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Anonymous: Unedited TaxonConcept data | ||||||
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