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planktonic foraminifera

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Journal Article
Published: 01 April 2007
Journal of Foraminiferal Research (2007) 37 (2): 150-159.
... planktonic foraminifera. Rugotruncana evolved from the genus Rugoglobigerina through the development of two peripheral keels and asymmetrical test ornamentation that is parallel to the periphery on the spiral side and meridional on the umbilical one. The genus Rugotruncana is included within...
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Journal Article
Published: 29 October 2018
Journal of Foraminiferal Research (2018) 48 (4): 288-300.
... distinguish Gc. pseudospinosa from other globoconellids. Fig. 5 Supplementary Plates 1–13, planktonic foraminifera related to the Truncorotalia crassaconica plexus. Globoconella inflata (Orbigny) subspecies triangula Theyer, 1973 Globoconella puncticulata (Deshayes, 1832...
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Journal Article
Journal: Paleobiology
Published: 27 February 2018
Paleobiology (2018) 44 (2): 263-272.
... modes is actually driven by our selection of traits in a study? In an attempt to answer this question, we have restudied the middle Miocene planktonic foraminifera Fohsella lineage, an iconic example of gradual morphologic evolution. In contrast to previous studies that have focused on the gross...
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Journal Article
Published: 01 May 2016
Journal of Sedimentary Research (2016) 86 (5): 431-437.
...Bingbin Qin; Tiegang Li; Zhifang Xiong; Thomas J. Algeo; Fengming Chang Abstract: The shell weights of planktonic foraminifera can be used as a proxy to reconstruct seawater [CO 3 2– ] in the past and, therefore, to provide clues regarding the ocean carbon cycle. Foraminiferal shells must...
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Journal Article
Published: 01 July 2015
Journal of Micropalaeontology (2015) 34 (2): 105-138.
... of the biozone can be recognized in the Shiranish Formation in NE Iraq, the top of the biozone cannot be identified due to the sudden disappearance of planktonic foraminifera at the top of the succession. The interval is also associated with the LO of Contusotruncana walfischensis and Rugoglobigerina scotti...
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Journal Article
Published: 01 October 2013
Journal of Foraminiferal Research (2013) 43 (4): 374-405.
...Lyndsey R. Fox; Bridget S. Wade Abstract Integrated Ocean Drilling Program Expedition 320/321 at Site U1338 (equatorial Pacific Ocean) recovered lower–middle Miocene (17–13.5 Myr) sediments containing unusually well-preserved and diverse planktonic foraminifera. Previous taxonomic study...
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Journal Article
Published: 01 October 2012
Journal of Foraminiferal Research (2012) 42 (4): 271-285.
...Atsushi Ando Abstract The late Albian planktonic foraminifera Hedbergella trocoidea yezoana Takayanagi and Iwamoto, 1962 , from Japan, whose primary distinguishing feature is 7–8 chambers in the final whorl, has been internationally cited with a species rank as Hedbergella yezoana . Still, its...
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Journal Article
Journal: Paleobiology
Published: 01 September 2012
Paleobiology (2012) 38 (4): 569-584.
... being used, it takes no formal account of any sampling biases that might exist in the fossil record. We demonstrate that the occurrence data of planktonic foraminifera, as recorded in the primary literature, are strongly biased by sampling. We do this by demonstrating that raw diversity curves derived...
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Journal Article
Published: 01 July 2012
Journal of Foraminiferal Research (2012) 42 (3): 257-269.
...Sophie Retailleau; Fréderique Eynaud; Yannick Mary; Virginie Abdallah; Ralf Schiebel; Hélène Howa Abstract The present study discusses the distribution of living planktonic foraminifera (LPF) in a neritic environment from the SE Bay of Biscay. Four sites, located at the head of Capbreton Canyon...
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Journal Article
Journal: Paleobiology
Published: 01 June 2012
Paleobiology (2012) 38 (3): 374-390.
...Heather S. Birch; Helen K. Coxall; Paul N. Pearson Abstract The carbon stable isotope (δ 13 C) composition of the calcitic tests of planktonic foraminifera has an important role as a geochemical tracer of ocean carbon system changes associated with the Cretaceous/Paleogene (K/Pg) mass extinction...
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Journal Article
Published: 01 October 2011
Italian Journal of Geosciences (2011) 130 (3): 343-351.
... of Cropani (Catanzaro) can be ascribed to nannofossil biozone MNN 16a and planktonic foraminifera biozone MPL 4b (lower Piacenzian) according to the Mediterranean calcareous plankton biostratigraphic zonations. Two laminites from the “Muto” Section (Botricello-Cutro road, Crotone), belong to MPL 5a and MNN...
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Journal Article
Journal: Paleobiology
Published: 01 August 2011
Paleobiology (2011) 37 (3): 426-437.
... between traits that were actually responsible for extinction and those that were merely correlated with it. Here, we present a test that can help distinguish between organismal and species-level selection, which we demonstrate using the high-resolution fossil record of planktonic foraminifera species...
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Journal Article
Published: 01 May 2011
Journal of Micropalaeontology (2011) 30 (1): 11-16.
... and Globorotalia crassaformis , and illustrate the possible evolutionary connections between agglutinated benthics and the planktonic foraminifera. Synonymy . ‘ Trochammina sp. 16’ (industry name from the Shell Venezuela type collection). Material . Five specimens housed in the collections of PDVSA in La...
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Journal Article
Journal: Paleobiology
Published: 01 August 2010
Paleobiology (2010) 36 (3): 357-373.
... cooling trend reported elsewhere implicates the importance of reduced upper-ocean stratification. Although there has been an implicit assumption that the species-specific depth habitats of fossil planktonic foraminifera were invariant through time, planktonic paleoecology is a potential variable...
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Journal Article
Published: 01 October 2009
Journal of Foraminiferal Research (2009) 39 (4): 316-321.
...Norberto Malumián; Gabriel Jannou; Carolina Náñez Abstract In the lower Paleogene of the Austral (Magallanes) basin, planktonic foraminifera are small and very scarce. Those in the Fuegian Andes, the orogenic margin of the basin, are serial forms that are also relatively minute and generally...
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Journal Article
Published: 01 July 2009
Journal of Foraminiferal Research (2009) 39 (3): 191-217.
... these clay samples were studied for planktonic foraminifera. Well-preserved examples of each species were picked and mounted on stubs for SEM. Selected specimens were imaged in three views by remounting and recoating them, and some were broken open using gentle pressure to obtain shell dissections. Splits...
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Journal Article
Published: 01 January 2009
Bulletin de la Société Géologique de France (2009) 180 (1): 27-38.
...Wendy Hudson; Malcolm B. Hart; Christopher W. Smart Abstract Over the last 50 years, our knowledge of early planktonic foraminifera has changed markedly. In 1958 Grigelis described “ Globigerina oxfordiana ” from the Upper Jurassic of Lithuania and this has, subsequently, become identified as one...
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Journal Article
Published: 01 October 2008
Journal of Foraminiferal Research (2008) 38 (4): 357-371.
... foraminiferal assemblages will be an important challenge to overcome in order to better constrain paleoecologic and paleoclimatic signals of global significance. Planktonic foraminifera are one of the most important producers of biogenic calcite in the oceans of the world ( Berger, 1970 ). They provide...
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Journal Article
Journal: Paleobiology
Published: 01 November 2007
Paleobiology (2007) 33 (4): 495-516.
...Helen K. Coxall; Paul A. Wilson; Paul N. Pearson; Philip F. Sexton Abstract Digitate shell morphologies have evolved repeatedly in planktonic foraminifera throughout the Cretaceous and Cenozoic. Digitate species are usually rare in fossil and modern assemblages but show increased abundance...
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Journal Article
Journal: PALAIOS
Published: 01 July 2007
PALAIOS (2007) 22 (4): 417-432.
.... globotruncanoides can be strictly defined as the Albian–Cenomanian boundary in Hokkaido. It should also be noted that, by taking the stratigraphic position of Unit KY-3 into consideration, the level of the Albian–Cenomanian boundary based on planktonic foraminifera of this study in the Ashibetsu area...
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