Results 171 to 180 of about 20,808 (214)
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Trophic activity of planktonic foraminifera
Journal of the Marine Biological Association of the United Kingdom, 1979Few studies have been reported on the predatory habits of planktonic foraminifera or on their position in marine food webs. Planktonic foraminifera are large marine Sarcodina possessing a calcium carbonate shell (usually < 1 mm diam.) surrounded by a dense halo of rhizopodia that in some species may increase the cell diameter to 20 mm.
O. R. Anderson +3 more
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Biology of Planktonic Foraminifera
Notes for a Short Course: Studies in Geology, 1982The history of investigations of planktonic foraminifera leading to their current, wide applications in biostratigraphic correlation of Mesozoic and Cenozoic marine sediments can be traced to the discovery by Owen (1867) of the floating habit of certain foraminifera, later confirmed by Brady (1884), and the recognition by Murray and Renard (1891) that ...
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Innovations among Paleogene planktonic foraminifera
Historical Biology, 1991Comparison of results from ODP Sites in the Indian and Antarctic Oceans with published data, reveal that planktonic foraminifera underwent considerable radiation, diversification, proliferation and expansion, throughout the 21 Myr duration of the Eocene, the longest, warmest epoch of the Cenozoic.
Sally Radford, Paul Gamson, Li Qianyu
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Planktonic foraminifera in biostratigraphy and biochronology
Newsletters on StratigraphyPlanktonic foraminifera, single-celled protists, are extensively used in biostratigraphy and biochronology thanks to their abundance in marine sediments, widespread distribution and extensive fossil record in the Cretaceous and Cenozoic. We present an overview of planktonic foraminiferal taxonomy, and evolutionary trends that are relevant to the ...
Petrizzo, Maria Rose +4 more
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Aquitanian Planktonic Foraminifera from Erben Guyot
Science, 1963Planktonic foraminifera occur in the limy sediment of a manganese-coated breccia from the top of Erben Guyot, a sunken island which is located about 800 miles west of San Diego, California. The fauna suggests an age of Early Miocene (Aquitanian Stage), which represents an absolute age of more than 25 million years.
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Radiation of Cenozoic Planktonic Foraminifera
Systematic Zoology, 1969The general aspects of planktonic foraminiferal radiation durilng the Cenozoic are shown by the distributional patterns of several morphotypic groups. There were two major radiations, one occurring during the Paleogene, the other during the Neogene. The radiations followed severe reductions in diversity which occurred at the close of the Cretaceous and
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Boron/Calcium in planktonic foraminifera
2014Climate transitions on recent and geologic timescales are linked to perturbations in atmospheric carbon dioxide concentrations (pCO2). Records of ocean carbonate chemistry allow us to investigate the role of CO2 during past climate events but are limited by the availability of paleo-proxies. This thesis presents the development and calibration of Boron/
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Benthic foraminifera as bioindicators of coral reef health
Nature Reviews Earth & Environment, 2023Angelique Rosa-Marín
exaly
Practical manual of Neogene planktonic foraminifera
2007This manual comprises, beside the principles of classification we adopted here, a description sheet for each genus with the major diagnostic features and the list of the selected and more utilized species; the two biostratigraphic zonations and range charts for the subtropical-tropical apen ocean and for the Mediterranean region; a large set of plates ...
IACCARINO, S. +6 more
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Monitoring marine oxygen with pores in benthic foraminifera
Nature Reviews Earth & Environment, 2023ROHAN SUBBA
exaly