Results 141 to 150 of about 457 (178)
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Calcium isotope ratios in calcitic tests of benthic foraminifers
Earth and Planetary Science Letters, 2010Abstract We analysed Ca isotope ratios of the infaunal foraminiferal species Cassidulina laevigata , Elphidium spp., Gyroidinoides spp., and Uvigerina peregrina as well as the epifaunal Cibicidoides wuellerstorfi over a depth–temperature gradient. The calcium isotope ratios of the benthic foraminifers' tests show a distinct anomaly around 4 °
Helena L Filipsson
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Assemblages of benthic foraminifers in the White Sea
Oceanology, 2009Based upon the composition of the dominant species of benthic foraminifers in the bottom sediments sampled at 50 sampling stations in the White Sea, their six assemblages (communities) were defined and mapped. The ranges of these communities depend on the environmental factors determined by the bathymetric, latitudinal, and circum-continental sea ...
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Benthic foraminifer communities of the Persian Gulf
Oceanology, 2010Eighteen types of benthic foraminifer communities inhabiting depths of 0–200 m are described for the Persian Gulf including the analysis of 269 sampling sites. The species area is mostly localized by the geographical position and bathymetrical features, including the water masses advection, the upwelling, the river discharge, and the concentrations of ...
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BORINGS IN LARGER BENTHIC FORAMINIFERS FROM TURKEY AND THEIR PALEOENVIRONMENTAL SIGNIFICANCE
The Journal of Foraminiferal Research, 2006Cretaceous/Paleogene outcrops of Turkey provide important areas for the study of trace fossils on larger benthic foraminiferal tests such as Orbitoides and Loftusia from the Maastrichtian, and Nummulites, Assilina and Discocyclina from the Eocene.
Gormus, Muhittin, Nielsen, Jan Kresten
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Recent Benthic Foraminifers from the South Atlantic Shelf of Argentina
Journal of Foraminiferal Research, 2018Abstract The aim of this study was to determine foraminiferal associations from recent sediments of Argentina's continental shelf (39–41ºS, 59–61ºW; 11–70 m) and assess their relationship to physicochemical parameters. From 20 samples, all dominated by sandy sediments (>80% sand), 44 species of foraminifers were identified, most ...
Bernasconi, Emiliana +2 more
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Cenozoic Deep-Water Benthic Foraminifers: ABSTRACT
AAPG Bulletin, 1981Cenozoic deep water deposits have yielded rich and diversified faunas of benthic formaminifers. From still limited data, it is clear than these faunas were depth stratified and that most species were cosmopolitan in distribution. The wide distribution and species richness, together with faunal turnover, which in places was very abrupt, points to great ...
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Test ultrastructure of some living benthic foraminifers
Lethaia, 1974Development of test ultrastructure through ontogeny is traced in four living species from the foraminiferal families Bolivinitidae and Caucasinidae. Test construction conforms in general to the monolomellar concept, but differs in having double pore membranes between consecutive calcitic lamellae and in maintaining a nearly consistent wall thickness ...
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UPPER ALBIAN BENTHIC FORAMINIFERS NEW IN WEST TEXAS
The Journal of Foraminiferal Research, 2002Part of the Lower Cretaceous Gulf Coast carbonate platform is exposed in west Texas and mapped as the Albian Devils River Formation. Two species of larger benthic foraminifers are described for the first time from this unit that have biostratigraphic utility. Paracoskinolina coogani n. sp.
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Ecology of benthic foraminifers in the littoral zone of Iturup Island
Oceanology, 2006The composition and abundance of present-day benthic foraminifers in the littoral zone of Iturup Island are examined. The littoral zone is surveyed on the sides of both the Sea of Okhotsk and the Pacific Ocean. The greatest species diversity and the maximum foraminifer abundance were observed on the bench and at the sites of attachment of seaweeds and ...
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A review of benthic foraminifers and ostracodes of the Antalya coast
2019We studied benthic foraminifer and ostracod faunas from the Southwestern coasts of Antalya (Turkey) in 227 sediment samples collected by SCUBA divers in July and August, 2002. We identified 50 foraminifer genera and 96 species, some of which contained numerous large specimens.
Meric E. +4 more
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