Globulina (foram)
Genus of single-celled organisms / From Wikipedia, the free encyclopedia
Globulina is a genus of Foraminifera with an ovate to globular test, included in the Polymorphinidae, Notocariacea, that has been extant since the Middle Jurassic (Callovian).
Quick Facts Globulina Temporal range: M Jurassic - Holocene, Scientific classification ...
Globulina | |
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Family: | Polymorphinidae |
Genus: | Globulina d'Orbigny, 1839 |
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Guttulina (Globulina) d'Orbigny |
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The test, (or shell), is of translucent, perforate, optically radial calcite. The surface smooth or rarely spinose to striate. Chambers are added at first in five planes, a little more than 144 deg. apart, as with the miliolid Quinqueloculina, but spiraling around the long axis; later chambers reduced to only three planes. Chambers are strongly overlapping; sutures oblique, flush to slightly depressed. Aperture terminal.