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Subspecies Globigerinoides triloba altiapertura Bolli 1957 | ||||||
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| Diagnosis / Definition: | ||||||
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Bolli (1957): Shape of test trochospiral; equatorial periphery distinctly lobate (trilobate); axial periphery rounded. Wall calcareous, perforate, surface finely pitted. Chambers spherical; about 12, arranged in about 2 1/2 whorls; the 3 chambers of the last whorl increase rapidly in size. Sutures on spiral side between early chambers radial, later slightly curved and oblique, depressed; on umbilical side: radial, depressed. Umbilicus fairly narrow, deep. Primary aperture, a high, distinct arch, interiomarginal, umbilical; the last few chambers show one supplementary sutural aperture about opposite the primary aperture. Coiling random. Largest diameter of holotype 0.55 mm. |
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| Discussion / Comments: | ||||||
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Bolli (1957): Globigerinoides triloba altiapertura, new subspecies, is distinguished from G. triloba immatura Le Roy by having a larger, higher arched, primary aperture. |
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| Systematics: | ||||||
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32 Familia Globigerinidae Genus Globigerinoides Subspecies Globigerinoides triloba altiapertura |
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| Synonym list: | ||||||
| Bolli (1957): 1957 Globigerinoides triloba altiapertura Bolli. - Bolli : pl. 25, figs. 7a-8, text-fig. 21, No. 3 new subspecies
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| Was used in synonym list of: | ||||||
| References: | ||||||
Bolli,H.M. (1957): |
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| Anonymous: Unedited TaxonConcept data | ||||||
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Taxon relations
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