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Journal articles on the topic "Foraminifera"

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Roy, T., F. Lombard, L. Bopp, and M. Gehlen. "Projected impacts of climate change and ocean acidification on the global biogeography of planktonic Foraminifera." Biogeosciences 12, no. 10 (May 19, 2015): 2873–89. http://dx.doi.org/10.5194/bg-12-2873-2015.

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Abstract. Planktonic Foraminifera are a major contributor to the deep carbonate flux and their microfossil deposits form one of the richest databases for reconstructing paleoenvironments, particularly through changes in their taxonomic and shell composition. Using an empirically based planktonic foraminifer model that incorporates three known major physiological drivers of their biogeography – temperature, food and light – we investigate (i) the global redistribution of planktonic Foraminifera under anthropogenic climate change and (ii) the alteration of the carbonate chemistry of foraminiferal habitat with ocean acidification. The present-day and future (2090–2100) 3-D distributions of Foraminifera are simulated using temperature, plankton biomass and light from an Earth system model forced with a historical and a future (IPCC A2) high CO2 emission scenario. Foraminiferal abundance and diversity are projected to decrease in the tropics and subpolar regions and increase in the subtropics and around the poles. Temperature is the dominant control on the future change in the biogeography of Foraminifera. Yet food availability acts to either reinforce or counteract the temperature-driven changes. In the tropics and subtropics the largely temperature-driven shift to depth is enhanced by the increased concentration of phytoplankton at depth. In the higher latitudes the food-driven response partly offsets the temperature-driven reduction both in the subsurface and across large geographical regions. The large-scale rearrangements in foraminiferal abundance and the reduction in the carbonate ion concentrations in the habitat range of planktonic foraminifers – from 10–30 μmol kg−1 in their polar and subpolar habitats to 30–70 μmol kg−1 in their subtropical and tropical habitats – would be expected to lead to changes in the marine carbonate flux. High-latitude species are most vulnerable to anthropogenic change: their abundance and available habitat decrease and up to 10% of the volume of their habitat drops below the calcite saturation horizon.
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M. Natsir, Suhartati, and Ira Dillenia. "The Benthic Foraminiferal Assemblages in the Seagrass Bed of Tanjung Berakit Waters, Bintan Island." HAYATI Journal of Biosciences 30, no. 6 (August 24, 2023): 1149–54. http://dx.doi.org/10.4308/hjb.30.6.1149-1154.

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Seagrass is the most common ecosystem in Tanjung Berakit waters. Therefore, Tanjung Berakit waters have a very important role as a benthic foraminiferal habitat. This study was conducted to describe the distribution of benthic foraminifera relating to the environmental condition of the waters. The samples were collected from eight stations by handling garb in November 2017. This study collected 18 species of shallow water benthic foraminifera dominated by Amphistegina and Heterostegina. This study recorded a correlation between the sediment texture and foraminiferal assemblages. The most common foraminifera were inhabiting fine-textured sediments, especially very fine sand and silt. Only a few foraminifers are collected from extremely fine sediments such as clay sediments, or extremely coarse including pebbles.
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Glock, Nicolaas, Alexandra-Sophie Roy, Dennis Romero, Tanita Wein, Julia Weissenbach, Niels Peter Revsbech, Signe Høgslund, David Clemens, Stefan Sommer, and Tal Dagan. "Metabolic preference of nitrate over oxygen as an electron acceptor in foraminifera from the Peruvian oxygen minimum zone." Proceedings of the National Academy of Sciences 116, no. 8 (February 6, 2019): 2860–65. http://dx.doi.org/10.1073/pnas.1813887116.

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Benthic foraminifera populate a diverse range of marine habitats. Their ability to use alternative electron acceptors—nitrate (NO3−) or oxygen (O2)—makes them important mediators of benthic nitrogen cycling. Nevertheless, the metabolic scaling of the two alternative respiration pathways and the environmental determinants of foraminiferal denitrification rates are yet unknown. We measured denitrification and O2respiration rates for 10 benthic foraminifer species sampled in the Peruvian oxygen minimum zone (OMZ). Denitrification and O2respiration rates significantly scale sublinearly with the cell volume. The scaling is lower for O2respiration than for denitrification, indicating that NO3−metabolism during denitrification is more efficient than O2metabolism during aerobic respiration in foraminifera from the Peruvian OMZ. The negative correlation of the O2respiration rate with the surface/volume ratio is steeper than for the denitrification rate. This is likely explained by the presence of an intracellular NO3−storage in denitrifying foraminifera. Furthermore, we observe an increasing mean cell volume of the Peruvian foraminifera, under higher NO3−availability. This suggests that the cell size of denitrifying foraminifera is not limited by O2but rather by NO3−availability. Based on our findings, we develop a mathematical formulation of foraminiferal cell volume as a predictor of respiration and denitrification rates, which can further constrain foraminiferal biogeochemical cycling in biogeochemical models. Our findings show that NO3−is the preferred electron acceptor in foraminifera from the OMZ, where the foraminiferal contribution to denitrification is governed by the ratio between NO3−and O2.
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Martinez, Ana, Laura Hernández-Terrones, Mario Rebolledo-Vieyra, and Adina Paytan. "Impact of carbonate saturation on large Caribbean benthic foraminifera assemblages." Biogeosciences 15, no. 22 (November 16, 2018): 6819–32. http://dx.doi.org/10.5194/bg-15-6819-2018.

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Abstract. Increasing atmospheric carbon dioxide and its dissolution in seawater have reduced ocean pH and carbonate ion concentrations, with potential implications on calcifying organisms. To assess the response of large Caribbean benthic foraminifera to low carbonate saturation conditions, we analyzed benthic foraminifers' abundance and relative distribution in surface sediments in proximity to low-carbonate-saturation submarine springs and at adjacent control sites. Our results show that the total abundance of large benthic foraminifera was significantly lower at the low-pH submarine springs than at control sites, although responses were species specific. The relative abundance of high-magnesium, porcelaneous foraminifera was higher than that of hyaline foraminifera at the low-pH springs due to the abundant Archaias angulatus, a chlorophyte-bearing foraminifer, which secretes a large and robust test that is more resilient to dissolution at low-calcite saturation. The different assemblages found at the submarine springs indicate that calcareous symbiont-barren foraminifera are more sensitive to the effects of ocean acidification than agglutinated and symbiont-bearing foraminifera, suggesting that future ocean acidification will likely impact natural benthic foraminifera populations.
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Isakova, Tatiana Nikolaevna, Tatiana Valerievna Filimonova, and Elena Ivanovna Kulagina. "ОСОБЕННОСТИ ТАКСОНОМИЧЕСКОГО РАЗНООБРАЗИЯ РАННЕПЕРМСКИХ ФОРАМИНИФЕР БАШКИРСКИХ ШИХАНОВ ГЕОПАРКА ТОРАТАУ (ON THE TAXONOMICAL DIVERSITY OF THE EARLY PERMAN FORAMINIFERA OF THE BASHKIR SHIKHANS IN THE TORATAU GEOPARK)." Geologicheskii vestnik, no. 2 (July 14, 2023): 94–115. http://dx.doi.org/10.31084/2619-0087/2023-2-7.

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Изучены ассоциации фораминифер из нижнепермских отложений рифовых массивов Торатау, Куштау и Юрактау. Определен их таксономический состав с учетом данных, ранее опубликованных предшествующими исследователями. Уникальной особенностью сообществ фораминифер (фузулинид и мелких фораминифер) Башкирских шиханов является неповторимый смешанный состав комплексов. В сообществах фораминифер присутствуют таксоны как широко латерально распространенные, так и эндемики; как виды северных акваторий, так и виды области Палеотетис. Таксономический состав фораминифер включает свыше 50 родов и более 180 видов. Приведена краткая характеристика стратиграфической приуроченности определенных родов и видов фораминифер в ассельско-артинских отложениях, слагающих рифовые массивы, а также основные сведения об условиях и образе жизни фораминифер. The foraminiferal assemblages from the Lower Permian deposits of the Toratau, Kushtau, and Yuraktau reef massifs were studied. Their taxonomic composition was determined taking into account the data published by previous researchers. A main feature of the foraminifera’s assemblages (fusulinids and small foraminifers) of Bashkir shikhans is the unique mixed composition of associations. Foraminiferal assemblages contain taxa both widely laterally distributed and endemic, both species of northern water areas and species of the Paleotethys area. The taxonomic composition of foraminifera is rich and varied, including more than 50 genera and more than 180 species. A brief description of the stratigraphic confinement of certain genera and species of foraminifers in the Asselian-Artinskian deposits that make up reef massifs is given, as well as basic information about the conditions and lifestyle of foraminifers.
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Keul, N., G. Langer, L. J. de Nooijer, and J. Bijma. "Effect of ocean acidification on the benthic foraminifera <i>Ammonia</i> sp. is caused by a decrease in carbonate ion concentration." Biogeosciences 10, no. 10 (October 1, 2013): 6185–98. http://dx.doi.org/10.5194/bg-10-6185-2013.

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Abstract. About 30% of the anthropogenically released CO2 is taken up by the oceans; such uptake causes surface ocean pH to decrease and is commonly referred to as ocean acidification (OA). Foraminifera are one of the most abundant groups of marine calcifiers, estimated to precipitate ca. 50 % of biogenic calcium carbonate in the open oceans. We have compiled the state of the art literature on OA effects on foraminifera, because the majority of OA research on this group was published within the last three years. Disparate responses of this important group of marine calcifiers to OA were reported, highlighting the importance of a process-based understanding of OA effects on foraminifera. We cultured the benthic foraminifer Ammonia sp. under a range of carbonate chemistry manipulation treatments to identify the parameter of the carbonate system causing the observed effects. This parameter identification is the first step towards a process-based understanding. We argue that [CO32−] is the parameter affecting foraminiferal size-normalized weights (SNWs) and growth rates. Based on the presented data, we can confirm the strong potential of Ammonia sp. foraminiferal SNW as a [CO32−] proxy.
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Pearson, Paul N. "Oxygen Isotopes in Foraminifera: Overview and Historical Review." Paleontological Society Papers 18 (November 2012): 1–38. http://dx.doi.org/10.1017/s1089332600002539.

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Foraminiferal tests are a common component of many marine sediments. The oxygen isotope ratio (δ18O) of test calcite is frequently used to reconstruct aspects of their life environment. The δ18O depends mainly on the isotope ratio of the water it is precipitated from, the temperature of calcification, and, to a lesser extent, the carbonate ion concentration. Foraminifera and other organisms can potentially preserve their original isotope ratio for many millions of years, although diagenetic processes can alter the ratios. Work on oxygen isotope ratios of foraminifera was instrumental in the discovery of the orbital theory of the ice ages and continues to be widely used in the study of rapid climate change. Compilations of deep sea benthic foraminifer oxygen isotopes have revealed the long history of global climate change over the past 100 million years. Planktonic foraminifer oxygen isotopes are used to investigate the history of past sea surface temperatures, revealing the extent of past ‘greenhouse’ warming and global sea surface temperatures.
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Natsir, Suhartati M. "THE DISTRIBUTION OF BENTHIC FORAMINIFERA IN DAMAR ISLAND AND JUKUNG ISLAND, SERIBU ISLANDS." Marine Research in Indonesia 35, no. 2 (December 31, 2010): 9. http://dx.doi.org/10.14203/mri.v35i1.10.

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Seribu Islands are archipelago within Jakarta Bay built upon the pleistocene coral formation of the Sunda Shelf. The islands are characterized by unique and high biodiversity such as coral reefs. Since coral reef degradation would lead to a decrease of human prosperity, the determination of the coral reef quality is of high importance. Foraminifera offers an early warning system for the coral reef condition, as exemplified by the FORAM Index, i.e. Foraminifera in Reef Assessment and Monitoring Index. This study compared the foraminiferal community structure and the FORAM Index of two islands between the Damar Besar and Jukung. Both islands were dominated by symbiont-bearing foraminifera of the genera Amphistegina, Calcarina, Heterostegina, Marginophora, and Operculina. However, the number of benthic foraminifers at Jukung Island was higher than that at Damar Besar Island, having 17 individuals per species on average. Jukung Island was a conducive site to reef growth, as indicated by a FORAM Index (between 6,48 and 6,57), and Damar Besar Island was liable to environmental change.
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Natsir, Suhartati M. "THE DISTRIBUTION OF BENTHIC FORAMINIFERA IN DAMAR ISLAND AND JUKUNG ISLAND, SERIBU ISLANDS." Marine Research in Indonesia 35, no. 2 (December 31, 2010): 9–14. http://dx.doi.org/10.14203/mri.v35i2.10.

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Seribu Islands are archipelago within Jakarta Bay built upon the pleistocene coral formation of the Sunda Shelf. The islands are characterized by unique and high biodiversity such as coral reefs. Since coral reef degradation would lead to a decrease of human prosperity, the determination of the coral reef quality is of high importance. Foraminifera offers an early warning system for the coral reef condition, as exemplified by the FORAM Index, i.e. Foraminifera in Reef Assessment and Monitoring Index. This study compared the foraminiferal community structure and the FORAM Index of two islands between the Damar Besar and Jukung. Both islands were dominated by symbiont-bearing foraminifera of the genera Amphistegina, Calcarina, Heterostegina, Marginophora, and Operculina. However, the number of benthic foraminifers at Jukung Island was higher than that at Damar Besar Island, having 17 individuals per species on average. Jukung Island was a conducive site to reef growth, as indicated by a FORAM Index (between 6,48 and 6,57), and Damar Besar Island was liable to environmental change.
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Senowbari-Daryan, Baba, and Michael Link. "Foraminifera from the Norian–Rhaetian reef carbonates of the Taurus Mountains (Saklıkent, Turkey)." Geologica Carpathica 68, no. 4 (August 1, 2017): 303–17. http://dx.doi.org/10.1515/geoca-2017-0021.

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AbstractNorian–Rhaetian reef carbonates are exposed in several localities in Taurus Mountains. They predominately contain hypercalcified sponges, followed by scleractinian corals and other less numerous organisms. A coherent Norian–Rhaetian reef structure is exposed near the small town of Saklıkent, west of Antalya. Foraminifers occur in reef carbonates of Saklıkent by numerous genera as shown in this paper. Two species —Siculocosta tauricaandSiculocosta sadati— are described as new. The foraminiferal association of Saklıkent is similar or almost identical to the associations known from the Norian–Rhaetian reefs of Sicily, Northern Calcareous Alps, and Greece but shows less similarity to the foraminiferal association from the Apennines, Italy. The most abundant foraminifers are milioliporoids, particularly galeanellids and cucurbitids. Some sessile and agglutinated foraminifers, includingAlpinophragmium perforatumFlügel, which mostly occurs abundantly in the Norian–Rhaetian reef carbonates, could not be found in the Saklıkent reef. This association of foraminifera is reported for the first time from a Norian–Rhaetian reef in the Taurus Mountains of Turkey.
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Dissertations / Theses on the topic "Foraminifera"

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Lundquist, Jason James. "Foraminiferal biostratigraphic and paleoceanographic analysis of the Eagle Ford, Austin, and Lower Taylor groups (Middle Cenomanian through Lower Campanian) of central Texas /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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Buchan, Olivia Claire Lewis Ronald D. "Relationships between large benthic foraminifera and their seagrass habitats, San Salvador, Bahamas." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Spring/master's/BUCHAN_OLIVIA_31.pdf.

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Caromel, Aude Genevieve Marcelle. "Form and function in planktic foraminifera." Thesis, University of Bristol, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.628998.

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Planktic foraminiferal tests and their morphology have been the subject of extensive study for biostratigraphy and palaeoenvironmental reconstructions. Iterative evolution of morphological designs and correlations between morphology and environmental parameters suggest either fundamental intrinsic constraints on form , or a functional control, or both. Yet the adaptive significance of the test morphologies in terms of these constraints has never been rigorously explored, and is the focus of this thesis. The developmental and growth constraints delimiting the scope of action for evolution were determined through ontogenetic reconstructions based on SRXTM scans. Differences in growth patterns between the globigerinid and globorotalid groups imply a different potential for diversification. Different metabolic processes dominate growth at different stages of ontogeny due to changes in surface area-to-volume ratios, so mechanisms of evolution responding to environmental factors may change depending on when they occur in ontogeny. Imposed on these are constructional considerations, which were gauged through estimation of coiling patterns through ontogeny from the reconstructions. Coiling in early ontogeny is constrained across all species to maximise lateral growth. From the neanic stage, changes in coiling occur to accommodate new chamber shapes, and are modulated by the migration of the aperture. Developmental processes of evolution must therefore operate within this framework. Computational fluid dynamic simulations were used to assess the functional role of the test in adjusting settling velocity, by varying morphological and water parameters independently. The range of evolutionary options open to foraminifera is a result of trade-offs between changes in size, shape and density, and environmentally required fluctuations can easily be accommodated by the natural within-population variability. The findings of this thesis imply that, in the compromise between function and constraints acting with the environment to define adult morphology and diversification, intrinsic factors are likely to play a more important role than function in plank tic foraminifera.
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Pearson, Paul Nicholas. "Evolution and phylogeny of Palaeogene planktonic foraminifera." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386154.

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Seears, Heidi. "Biogeography and phylogenetics of the planktonic foraminifera." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/11879/.

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The planktonic foraminifera are a highly abundant and diverse group of marine pelagic protists that are ubiquitously distributed throughout the worlds’ oceans. These unicellular eukaryotes are encased in a calcareous (CaCO3) shell or ‘test’, the morphology of which is used to identify individual ‘morphospecies’. The foraminifera have an exceptional fossil record, spanning over 180 million years, and as microfossils provide a highly successful paleoproxy for dating sedimentary rocks and archiving past climate. Molecular studies, using the small subunit (SSU) ribosomal (r) RNA gene are used here to investigate the biogeographical distributions and phylogenetic relationships of the planktonic foraminifera. Biogeographical surveys of two markedly different areas of the global ocean, the tropical Arabian Sea, and the transitional/sub-polar North Atlantic Ocean, revealed significant genotypic variation within the planktonic foraminifera, with some genetic types being sequenced here for the first time. The foraminiferal genotypes displayed non-random geographical distributions, suggestive of distinct ecologies, giving insight into the possible mechanisms of diversification in these marine organisms. The ecological segregation of genetically divergent but morphologically cryptic genetic types could, however, have serious repercussions on their use as paleoproxies of past climate change. Phylogenetic analyses of the foraminifera based firstly on a partial ~1,000 bp terminal 3´ fragment of the SSU rRNA gene, and secondly on the ~3,000 bp almost complete gene supported the hypothesis of the polyphyletic origins of the planktonic foraminifera, which appear to be derived from up to 5 separate benthic ancestral lineages. The almost complete gene is sequenced here in the planktonic taxa for the first time, though amplification was problematic. In a first step to addressing a pressing need for new genetic markers to support data gained from the SSU rRNA gene, a culture system was established for the benthic foraminifera, in order to provide a reliable source of DNA for EST library construction or full genome sequencing. Finally, to overcome difficulties associated with the PCR amplification of the foraminifera, a new lysis buffer and DNA extraction procedure was developed. A highly successful buffer was created, allowing high quality DNA to be extracted from foraminiferal specimens, whilst leaving the delicate calcitic shell intact for morphological reference.
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Ward, Juliette Natalie. "Foraminifera as proxiles for monitoring organic pollution." Thesis, University of Southampton, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398830.

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Al-Sayigh, Abdul Razak Siddiq. "Lower Tertiary Foraminifera from south east Oman." Thesis, Aberystwyth University, 1999. http://hdl.handle.net/2160/1a8d5b93-df4b-412e-aecb-38c02de78e03.

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Over 250 samples were collected over three field seasons from the SE Oman Mountains. Fortyone species of planktonic Foraminifera (belonging to 7 genera) and twenty-eight species of larger benthonic Foraminifera, (belonging to 13 genera) are figured (both by SEM and optical photography) from the Wadi Musawa and Wadi Suq sections. Nine planktonic foraminiferal zones are formally recognised between the Upper Palaeocene(P 4) and upper Middle Eocene (P14). The known stratigraphic distribution of these species was used to recognise the zones P 5, P8-P9 as equivalentt o standard zones of Blow, 1969,1979, whilst strata considered generally equivalent to P4 and PIO-PI4 in the Wadi Musawa section are zoned on the basis of the local range. Younger sediments can only be dated on larger Foraminifera. A possible hiatus representing the planktonic zones P 6/P7 is tentatively identified. Fifteen lithostratigraphic units are recognised and formally described from three formations: the Abat Formation( units A-D), the Musawa Formation (units E-L) and the Tahwah Formation (units M-0). The ages of the Abat and Musawa formations are redefined and are shown to be significantly older than previously published. Biostratigraphical and palaeoenvironmental data from both the planktonic and the larger Foraminifera has been used in conjuction with the lithostratigraphy to construct a sequence stratigraphy, in which several cycles have been recognised. Some of these cycles may correlate with the global sea-level cycles of Haq et al. (1987) and include TA2.3 and TAM, Whilst others are local due to tectonically induced regressive and transgressive events. Information not only from the Foraminifera but also from radiolaria, ostracods and molluscs has been used to reconstruct the palaeoenvironment for the Omani Palaeogene. Parts of the Lower and Middle Eocene contain in-situ larger Foraminifera indicating deposition in a shelf (dominantly mid to outer) setting. During the late Palaeocene, most of the early Eocene, part of the middle Eocene, and the entire late Eocene/early Oligocene mixed assemblages of planktonics and shallow water benthonics were the dominant Foraminifera. The occurrence of the these two assemblages in deepwater sediments indicates a substantial period of time in which penecontemporaneous uplift and resedimentation of carbonate shelf deposits into deeperwater occurred. A number of new larger and smaller benthonic Foraminifera are described and one planktonic foraminifer renamed.
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Coxall, Helen Katherine. "Hantkeninid planktonic foraminifera and Eocene palaeoceanographic change." Thesis, University of Bristol, 2000. http://hdl.handle.net/1983/8efa1d22-0ff8-45a3-9a5c-bd5ea90e266f.

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The morphological and ecologicalevolution of middle-upper Eocene planktonic foraminiferal family Hantkeninidae is investigated in the context of the dramatic palaeoceanographic and climatic changes that marked the transition from Paleogene "greenhouse" to Neogene "icehouse" climatic conditions. Morphometric analysis proves that evolution in family Hantkeninidae was gradual but complex in detail with periods of relative stasis. Multiple lines of evidence demonstrate that Hantkenina evolved from planispiral clavate genus Clavigerinella and not, as was previously believed, from Pseudohastigerina micra. The ancestor of Clavigerinella was probably a low trochospiral form Paragloborotalia sp., which has been recognized for the first time in this study at a number of sites. Trends in chamber inflation, tubulospine angle and the position of the tubulospine on each chamber show the most dramatic evolutionary changes, indicating that these are the most useful characters for taxonomy. These morphological changes correlate well with known palaeoceanographic changes as well as the shift in hantkeninid ecology from a deep to a surface water habitat. Hantkeninids underwent pronounced adaptive evolution in depth habitats during the initial phase of the climatic transition. Lower middle Eocene forms lived in a cool deep-water environment within or below the oceanic thermocline and shifted to warmer surface waters in the late middle Eocene. They evolved in the low latitudes and were primarily. a tropical-subtropical group. The occurrence of Hantkenma australis at relatively high northerly and southerly latitudes during the middle Eocene may record a temporary expansion of warmer water conditions into these regions, possibly representing a hitherto unknown "hyperthermal" event. Clavigerinella is rare in middle Eocene open-ocean sequences but occasionally occurs in relative abundance in other localities (such as on continental margins and oceanic seamounts), suggesting that it was specialized for living in upwelling regions. A revised taxonomy of family Hantkeninidae is presented that reflects new understanding ofhantkeninid evolution. The reconstructed phylogeny demonstrates that the tubulospine-bearing genera Hantkenina and Cribrohantkenina represent a monophyletic clade. Multivariate analysis suggests that more than one morphological population existed at several times and that these may represent biological species. The results demonstrate that the hantkeninids are not merely passive recorders of ocean conditions but have instead evolved morphology and changed habitat in response to climate change.
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Licari, Laetitia. "Ecological preferences of Benthic Foraminifera in the Eastern South Atlantic : distribution patterns, stable carbon isotopic composition, and paleoceanographic implications = Ökologische Ansprüche benthischer Foraminiferen im östlichen Südatlantik /." Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung, 2006. http://www.gbv.de/dms/bs/toc/514912308.pdf.

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Hudson, Wendy. "The evolution and palaeobiogeography of Mesozoic planktonic foraminifera." Thesis, University of Plymouth, 2007. http://hdl.handle.net/10026.1/719.

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In the 1960s Oberhauser and Fuchs (palaeontologists working at the Geologische Bundesanstalt in Vienna) described a range of new taxa from the Triassic of Austria that were thought to be the earliest planktonic foraminifera. The first reactions of the palaeontological community were negative but in the subsequent forty years our knowledge of Jurassic planktonic foraminifera has expanded considerably. A thorough re-evaluation of the Oberhauser and Fuchs collections in Vienna has shown that these species are probably not planktonic and that the first planktonic taxa appeared in the Toarcian. This origination in the centre of Western Tethys was followed by a rapid expansion of planktonic foraminifera throughout Peri-Tethys. This expansion is dominated by the genera Conoglobigerina and Globuligerina and while some believe that their separation is straightforward (based on apertural characters) analysis of large assemblages shows that this differentiation is not reliable and requires further analysis not only of holotypes, paratypes and topotypes but of large assemblages. In Southern Poland, Middle Jurassic limestones in the Pieniny Klippen Belt are described as foraminiferal packstones and represent the first evidence of a foraminiferal ooze on the ocean floor. This indicates that, by the mid-Jurassic, there was an oceanic stratification of the Aragonite and Carbonate Compensation Depths and that the modem ocean system had developed, although the depths of these various layers may have been different to those of the present day. By the Oxfordian a relatively diverse planktonic fauna had expanded throughout Peri- Tethys and, probably, around the globe in the tropics. The fauna expanded further in the early Cretaceous as Gondwana fragmented but data across the important Jurassic to Cretaceous transition is extremely limited and requires further investigation.
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Books on the topic "Foraminifera"

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Sen Gupta, Barun K. Modern Foraminifera. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/0-306-48104-9.

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K, Sen Gupta B., ed. Modern foraminifera. Dordrecht: Kluwer Academic Publishers, 1999.

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Cimerman, Franc. Mediterranean Foraminifera. Ljubljana: Slovenska akademija znanosti in umetnosti, 1991.

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K, Sen Gupta B., ed. Modern foraminifera. Dordrecht: Kluwer Academic Publishers, 2002.

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Mikhalevich, V. I. Sistema chetyrekh podklassov foraminifer s aggli͡utinirovannoĭ stenkoĭ rakovin (Ammodiscana, Miliamminana, Hormosinana, Textulariana) (Foraminifera). Sankt-Peterburg: Zoologicheskiĭ in-tut RAN, 2003.

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Hemleben, Christoph, Michael Spindler, and O. Roger Anderson. Modern Planktonic Foraminifera. New York, NY: Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4612-3544-6.

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1835-1891, Brady Henry Bowman, and Natural History Museum (London, England), eds. The Challenger foraminifera. Oxford: Oxford University Press, 1994.

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Michael, Spindler, and Anderson O. Roger 1937-, eds. Modern planktonic foraminifera. New York: Springer-Verlag, 1989.

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Adisaputra, Mimin K. Katalog Foraminifera perairan Indonesia. Bandung: Kementerian Energi dan Sumber Daya Mineral, Badan Litbang Energi dan Sumber Daya Mineral, Pusat Penelitian dan Pengembangan Geologi Kelautan, 2010.

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Holbourn, Ann, Andrew S. Henderson, and Norman MacLeod. Atlas of Benthic Foraminifera. Oxford, UK: Wiley-Blackwell, 2013. http://dx.doi.org/10.1002/9781118452493.

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Book chapters on the topic "Foraminifera"

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Ehrlich, Hermann. "Foraminifera." In Biological Materials of Marine Origin, 455–64. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9130-7_33.

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Edwards, Robin, and Alex Wright. "Foraminifera." In Handbook of Sea-Level Research, 191–217. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118452547.ch13.

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Hallock, Pamela. "Foraminifera." In Encyclopedia of Modern Coral Reefs, 416–21. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-2639-2_80.

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Sabbatini, Anna, Caterina Morigi, Maria Pia Nardelli, and Alessandra Negri. "Foraminifera." In The Mediterranean Sea, 237–56. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6704-1_13.

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Armstrong, Howard A., and Martin D. Brasier. "Foraminifera." In Microfossils, 142–87. Malden, MA USA: Blackwell Publishing, 2013. http://dx.doi.org/10.1002/9781118685440.ch15.

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Altenbach, Alexander V. "Foraminifera." In Encyclopedia of Geobiology, 393–96. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-1-4020-9212-1_93.

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Cortés, Jorge, Claudia Mora-Baumgartner, and Vanessa Nielsen. "Foraminifera." In Marine Biodiversity of Costa Rica, Central America, 131–35. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-8278-8_8.

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Tendal, Ole S. "Why are Foraminiferida Foraminifers ?" In Paleoecology, Biostratigraphy, Paleoceanography and Taxonomy of Agglutinated Foraminifera, 13–18. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-011-3350-0_2.

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Kimoto, Katsunori. "Planktic Foraminifera." In Marine Protists, 129–78. Tokyo: Springer Japan, 2015. http://dx.doi.org/10.1007/978-4-431-55130-0_7.

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Jain, Sreepat. "Benthic Foraminifera." In Fundamentals of Invertebrate Palaeontology, 171–92. New Delhi: Springer India, 2019. http://dx.doi.org/10.1007/978-81-322-3962-8_9.

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Conference papers on the topic "Foraminifera"

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Romanova, Alexandra, Alexandra Romanova, Vladimir Anin, Vladimir Anin, Sergey Pletnev, Sergey Pletnev, Tatyana Tarasova, and Tatyana Tarasova. "CARBONATE DISSOLUTION AND ULTRASTRUCTURAL BREAKDOWN IN PLANKTONIC FORAMINIFERA IN THE SEA OF OKHOTSK." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b93b6ac2b30.99187085.

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80 sediment stations collected along the meridian transect across the Sea of Okhotsk were studied in order to reveal patterns of dissolution based on planktonic foraminifera. The degree of calcite dissolution intensity from planktonic foraminifera determined by different indices (degree of fragmentation, presence of susceptible to dissolution species, benthos/ plankton ratio). The highest degree of dissolution evidenced by a large number of shell fragments and corroding walls were found in sediments from the area of the Kuril Islands. The most revealing measure of probable dissolution of foraminiferal shells in the central part of the sea is a low number and lack of thin-walled species. The effects of dissolution on foraminiferal shells were studied for dominated species Neogloboquadrina pachyderma sin and Globigerina bulloides using a scanning electron microscope. The results are important for understanding processes of sedimentation, the paleo-oceanologial reconstructions and for obtaining reliable results in isotope analyzes.
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Romanova, Alexandra, Alexandra Romanova, Vladimir Anin, Vladimir Anin, Sergey Pletnev, Sergey Pletnev, Tatyana Tarasova, and Tatyana Tarasova. "CARBONATE DISSOLUTION AND ULTRASTRUCTURAL BREAKDOWN IN PLANKTONIC FORAMINIFERA IN THE SEA OF OKHOTSK." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b93cfe35991.48973379.

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80 sediment stations collected along the meridian transect across the Sea of Okhotsk were studied in order to reveal patterns of dissolution based on planktonic foraminifera. The degree of calcite dissolution intensity from planktonic foraminifera determined by different indices (degree of fragmentation, presence of susceptible to dissolution species, benthos/ plankton ratio). The highest degree of dissolution evidenced by a large number of shell fragments and corroding walls were found in sediments from the area of the Kuril Islands. The most revealing measure of probable dissolution of foraminiferal shells in the central part of the sea is a low number and lack of thin-walled species. The effects of dissolution on foraminiferal shells were studied for dominated species Neogloboquadrina pachyderma sin and Globigerina bulloides using a scanning electron microscope. The results are important for understanding processes of sedimentation, the paleo-oceanologial reconstructions and for obtaining reliable results in isotope analyzes
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Romanova, Alexandra, Alexandra Romanova, Vladimir Anin, Vladimir Anin, Sergey Pletnev, Sergey Pletnev, Tatyana Tarasova, and Tatyana Tarasova. "CARBONATE DISSOLUTION AND ULTRASTRUCTURAL BREAKDOWN IN PLANKTONIC FORAMINIFERA IN THE SEA OF OKHOTSK." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b4315c3db34.

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80 sediment stations collected along the meridian transect across the Sea of Okhotsk were studied in order to reveal patterns of dissolution based on planktonic foraminifera. The degree of calcite dissolution intensity from planktonic foraminifera determined by different indices (degree of fragmentation, presence of susceptible to dissolution species, benthos/ plankton ratio). The highest degree of dissolution evidenced by a large number of shell fragments and corroding walls were found in sediments from the area of the Kuril Islands. The most revealing measure of probable dissolution of foraminiferal shells in the central part of the sea is a low number and lack of thin-walled species. The effects of dissolution on foraminiferal shells were studied for dominated species Neogloboquadrina pachyderma sin and Globigerina bulloides using a scanning electron microscope. The results are important for understanding processes of sedimentation, the paleo-oceanologial reconstructions and for obtaining reliable results in isotope analyzes.
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Zaychikova, Ekaterina V. "Biostratigraphy of the upper jurassic of the Verkh-Tarskaya drilling area (South of Western Siberia in foraminifera)." In Недропользование. Горное дело. Направления и технологии поиска, разведки и разработки месторождений полезных ископаемых. Экономика. Геоэкология. Федеральное государственное бюджетное учреждение науки Институт нефтегазовой геологии и геофизики им. А.А. Трофимука Сибирского отделения Российской академии наук, 2020. http://dx.doi.org/10.18303/b978-5-4262-0102-6-2020-009.

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The study of the taxonomic composition of foraminifera in the wells of the Verkh-Tarskaya drilling area formed the basis of this study. This made it possible to clarify the content of the complexes and trace the zones and layers with foraminifera. The biostratigraphic characteristics of the middle oxfordian-lower volgian sediments are also presented in the work, and changes in the taxonomic composition and structure of foraminifera complexes from wells in the Verkh-Tarsky district.
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Lazar, Kelly Best. "FUMAROLES & FORAMINIFERA: CHRONICLING EFFECTS OF DECREASED PH ON BENTHIC FORAMINIFERA OF DOMINICA." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-308181.

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Kelany, Abdel Rahman M., Sherif F. Farouk, Ahmed A. Kassem, and Mohamed E. Abuel Majd. "Sequence Stratigraphy and Paleobathymetry of the Lower-Middle Miocene Succession, Gulf of Suez, Egypt." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/211674-ms.

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Abstract In the Gulf of Suez rift basin, the Miocene sequence is a significant hydrocarbon resource. An integration of the planktonic foraminifera, and benthic foraminiferal biofacies are data used to build a detailed and fine chronostratigraphic scheme for the lower part to middle part Miocene succession in the October Field, Gulf of Suez. The paleoecologic habits and paleobathymetry of benthic foraminiferal biofacies, as well as the planktic/benthic (P/B) ratios of the studied successions, are used to determine the paleoenvironmental conditions that are in effect during the deposition of the studied Miocene successions. Elphidium biofacies are representative of the inner shelf paleoenvironment, Nonion biofacies and Siphonina/Cibicides biofacies are representative of the middle shelf paleoenvironment, Bulimina and Uvigerina biofacies are representative of the paleoenvironment outer shelf. The paleoenvironmental interpretations and chronostratigraphic for data and the nature of stratigraphic relations are integrated to distinguish five depositional sequences in the studied section. These are two in the Aquitanian/Burdigalian, one in the Burdigalian-Langhian, one in the Langhian, and one sequence in the Serravallian ages. The sequence boundaries were marked by subaerial exposures and hiatuses. A detailed correlation between the distinguished sequence stratigraphic lower-middle Miocene frame and those established in and outside Egypt is attempted. The absolute time equivalents of the planktic foraminiferal zones are adjusted by comparison with the geologic time scale of Gradstein et al. 2022. This comparison points out a more or less compatible correlation, with a few deviations that may be related to tectonic events that led to the absence of some recorded depositional sequences.
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Bernhard, Joan M., Luke Fisher, Megan Reilly, Ann Bucklin, Jennifer Questel, Veronique Le Roux, and Pieter Visscher. "CAN FRESHWATER FORAMINIFERA IMPACT STROMATOLITE FABRIC?" In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-303002.

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Hoogakker, Babette, Caroline Anderson, Helen Grant, Claire Mahaffey, Sabena Blackbird, Erin McClymont, Rosalind Rickaby, Alex Poulton, and Victoria Peck. "Organic carbon isotopes of planktic foraminifera." In Goldschmidt2021. France: European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.7047.

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Adams, Arthur, Lukas Baumgartner, Torsten Vennemann, Deyanira Cisneros-Lazaro, Damien Daval, Sylvain Bernard, Jinming Guo, et al. "Foraminifera Isotope Reequilibration Biases Paleotemperature Records." In Goldschmidt2021. France: European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.6754.

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Panieri, G., G. Gabbianelli, and S. D‘onofrio. "Benthic Foraminifera Assemblage in Adriatic Sea Pockmark." In EAGE Conference on Geology and Petroleum Geology of the Mediterranean and Circum-Mediterranean Basins. European Association of Geoscientists & Engineers, 2000. http://dx.doi.org/10.3997/2214-4609.201406085.

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Reports on the topic "Foraminifera"

1

McNeil, D. H., J. Dixon, and K. M. Bell. The age, foraminifera, and palynology of the Upper Cretaceous Eagle Plain Group, northern Yukon. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328237.

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A re-evaluation of the age of the formations comprising the Eagle Plain Group of northern Yukon was necessitated by widely disparate age determinations in recent years from various authors. Maximum age estimates for the base of the group have varied from middle Albian to Cenomanian, and age estimates for the uppermost strata varied by an even greater range, from Cenomanian to late Maastrichtian. A re-examination of new and archival foraminiferal and palynological data indicates an age range of Cenomanian to late Maastrichtian for the Eagle Plain Group. The late Maastrichtian age is derived from palynology from the northeasternmost area of Eagle Plain. However, the stratigraphic relationship of these youngest beds within Eagle Plain Group remains uncertain. Marine strata of the Eagle Plain Group contain foraminiferal indices that correlate with long-established regional foraminiferal zones from the Mackenzie Delta area. The Cenomanian Zone of Trochammina superstes occurs in the Parkin and Boundary Creek formations of Eagle Plain and Mackenzie Delta, respectively. The Haplophragmoides bilobatus and overlying Glaphyrammina spirocompressa zones occur in the Burnthill Creek and Smoking Hills formations of Eagle Plain and Mackenzie Delta, respectively. Reworked microfossils are a conspicuous feature of strata within the Eagle Plain Group. The basal sandstone of the Parkin Formation, for example, contains an assemblage of foraminifera that is entirely reworked. Palynomorph assemblages through the Eagle Plain Group have been estimated at as much as 99% reworked in some strata.
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Haggart, J. W., R. T. Patterson, and A. P. Dalby. Foraminifera from the Longarm Formation, Queen Charlotte Islands, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1997. http://dx.doi.org/10.4095/208599.

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Thomas, F. C. The literature of Jurassic and early Cretaceous foraminifera - a compendium. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1997. http://dx.doi.org/10.4095/208915.

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Fowler, S. Distribution of selected Berriasian to Aptian benthic foraminifera, Beaufort-Mackenzie area. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/207693.

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Vilks, G., and B. Deonarine. Foraminifera in cores from the continental shelf of northern and eastern Canada. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1995. http://dx.doi.org/10.4095/203481.

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Patterson, R. T. Early Miocene To Quaternary Foraminifera From Three Wells in the southern Queen Charlotte Basin. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/130588.

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Al-aasm, I. S., and B. D. Bornhold. Stable Isotope Studies of Planktonic Foraminifera Globigerina Bulloides From Cores in the Northeast Pacific Ocean. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/120645.

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Patterson, R. T. A Progress Report On Late Quaternary Benthic Foraminifera From the Central Continental Shelf of western Canada. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1990. http://dx.doi.org/10.4095/131441.

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Callender, Arden. Middle and upper Eocene biostratigraphy (Foraminifera) of the Cascade Head area, Lincoln and Tillamook Counties, Oregon. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.2491.

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Hedinger, A. S. Upper Jurassic (Oxfordian-Volgian) Foraminifera from the Husky Formation, Aklavik Range, District of Mackenzie, Northwest Territories. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1993. http://dx.doi.org/10.4095/41746.

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