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Subspecies Globorotalia pusilla pusilla Bolli 1957 | ||||||
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| Diagnosis / Definition: | ||||||
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Bolli (1957): Shape of test low trochospiral, biconvex, compressed; equatorial periphery nearly circular, slightly lobate; axial periphery acute to subacute. Wall calcareous, perforate, surface smooth. Chambers compressed; 12-16, arranged in 2-1/2 3 whorls, the 5-6 chambers of the last whorl increasing moderately in size. Sutures on spiral side strongly curved, slightly depressed; on umbilical side radial, depressed. Umbilicus narrow, open. Aperture a low arch, with narrow lip; interiomarginal, extraumbilical umbilical. Coiling random. Largest diameter of holotype 0.24 mm. |
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| Discussion / Comments: | ||||||
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Bolli (1957): Globorotalia pusilla pusilla Bolli, new species, new subspecies, is distinguished from G. capdevilensis Cushman and Bermudez by its closer coiling, stronger curved sutures on the spiral side and slightly less compressed chambers. The new subspecies differs from G. albeari Cushman and Bermudez in having fewer chambers in the last whorl (about 5 instead of 8-10) and in being less trochospiral. |
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| Systematics: | ||||||
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32 Familia Globorotaliidae Genus Globorotalia Species Globorotalia pusilla Subspecies Globorotalia pusilla pusilla |
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| Synonym list: | ||||||
| Bolli (1957): 1957 Globorotalia pusilla pusilla Bolli. - Bolli : pl. 20, figs. 8-10 new species, new subspecies
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| References: | ||||||
Bolli,H.M. (1957): |
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| Anonymous: Unedited TaxonConcept data | ||||||
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Taxon relations
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