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2015
Benthic foraminifera are unicellular, aquatic (marine and brackish) eukaryotic organisms. They are benthic bottom dwellers characterized by high diversity and abundance. In benthic foraminifera, the cytoplasmic body is encased in organic or mineralized test (shell), which provides a fossil record (Cambrian to recent).
Boltovskoy, Demetrio +1 more
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Benthic foraminifera are unicellular, aquatic (marine and brackish) eukaryotic organisms. They are benthic bottom dwellers characterized by high diversity and abundance. In benthic foraminifera, the cytoplasmic body is encased in organic or mineralized test (shell), which provides a fossil record (Cambrian to recent).
Boltovskoy, Demetrio +1 more
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The spirotheca of the foraminifer Quasifusulina
Lethaia, 1993A SEM study on the test wall of Quasifusulina has demonstrated that the ultrastructures in the spirotheca Quasifusulina different from those of related fusulinid genera, such as Fusulinella and Triticites. The primary wall structure is prokerotheca rather than diaphanotheca or keriotheca, as previously described.
Xiangning Yang, Hong Zheng
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1981
The micropalaeontologist is concerned with the abandoned, dead shells of Foraminifera and classification of fossil species proceeds entirely upon the basis of the morphology of the hard parts or test. However, he requires a knowledge of the live animal because the morphology and the evolutionary changes so important in stratigraphy can only be ...
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The micropalaeontologist is concerned with the abandoned, dead shells of Foraminifera and classification of fossil species proceeds entirely upon the basis of the morphology of the hard parts or test. However, he requires a knowledge of the live animal because the morphology and the evolutionary changes so important in stratigraphy can only be ...
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Proceedings of the Geologists' Association, 1949
Summary Unlike other free-living foraminifera some specimens of Flabellina cf angulosa d'Orbigny from various zones of the Upper Chalk show a strong tendency to have adherent end chambers. This together with a change of ornament from smooth to a pustulose shell seems to be unique amongst foraminifera.
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Summary Unlike other free-living foraminifera some specimens of Flabellina cf angulosa d'Orbigny from various zones of the Upper Chalk show a strong tendency to have adherent end chambers. This together with a change of ornament from smooth to a pustulose shell seems to be unique amongst foraminifera.
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Triassic foraminifers of the Lampang Group (Northern Thailand)
Journal of Asian Earth Sciences, 2006Abstract Triassic foraminifers are recognized, for the first time, in limestones from four localities of the Lampang Group (Northern Thailand), tectonically assigned to the Sukhothai Subterrane (Sukhothai Folded Belt) which is located between western the Sibumasu (Shan-Thai) Terrane and eastern Indochina.
Martini Rossana +2 more
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Foraminifers and Continental Drift
AAPG Bulletin, 1974Abstract The global distribution of Orbitolina along the tropical and subtropical belts of the world during the Early Cretaceous is interpreted as an ecological chance caused by absence of competition. Distribution and diversification of Late Cretaceous larger foraminifers in the Caribbean appear more closely related to ecology than ...
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Evolution of early planktic foraminifers
Marine Micropaleontology, 1983Abstract The evolution of Mesozoic species of planktic foraminifers, particularly the succession of their morphotypes and the variation in their diversity and their abundance, is shown to be related to the adaptation of evolutionary strategy to fluctuations in the oceanic environment. During periods of stress (“oligotaxic period”) the more primitive
Michèle Caron, Peter Homewood
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The Journal of Foraminiferal Research, 2008
This study from the continental shelf offshore from Washington, USA, describes an occurrence of attached foraminifers using other, larger foraminifers as their hard substrate. Isolated instances of such associations have been illustrated in a few publications; however, the example documented here is of an extensive relationship between smaller attached
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This study from the continental shelf offshore from Washington, USA, describes an occurrence of attached foraminifers using other, larger foraminifers as their hard substrate. Isolated instances of such associations have been illustrated in a few publications; however, the example documented here is of an extensive relationship between smaller attached
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Pyritization in living foraminifers
The Journal of Foraminiferal Research, 1973Pyrite found in tests of living specimens (formed by bacteria in test), may indicate disease or a relationship between foraminifera and bacteria, specimens from Puerto ...
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