Vellekoop, J.; Holwerda, F.; Prámparo, M.B.; Willmott, V.; Schouten, S.; Cúneo, N.R.; Scasso, R.A.; Brinkhuis, H."Climate and sea-level changes across a shallow marine Cretaceous–Palaeogene boundary succession in Patagonia, Argentina" (2017) Palaeontology. 60(4):519-534
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Upper Maastrichtian to lower Paleocene, coarse-grained deposits of the Lefipán Formation in Chubut Province, (Patagonia, Argentina) provide an opportunity to study environmental changes across the Cretaceous–Palaeogene (K–Pg) boundary in a shallow marine depositional environment. Marine palynological and organic geochemical analyses were performed on the K–Pg boundary interval of the Lefipán Formation at the San Ramón section. The palynological and organic geochemical records from the San Ramón K–Pg boundary section are characteristic of a highly dynamic, nearshore setting. High abundances of terrestrial palynomorphs, high BIT-index values and the occasional presence of plant fossils are indicative of a large input of terrestrial organic material. The organic-walled dinoflagellate cyst (dinocyst) assemblage is generally dominated by Senegalinium and other peridinioid dinocyst taxa, indicative of high-nutrient conditions and decreased salinities, probably associated with a large fluvial input. The reconstructed sea surface temperatures range from 25°C to 27°C, in accordance with the tropical climate inferred by palynological and megafloral studies. As in the Bajada del Jagüel section, ~500 km north-north-east of San Ramón, peaks of Senegalinium spp. were recorded below and above the K–Pg boundary, possibly related to enhanced runoff resulting from more humid climatic conditions. The lithological, palynological and organic geochemical records suggest the occurrence of a sea-level regression across the K–Pg boundary, resulting in a hiatus directly at the boundary in both sections, followed by a transgression in the Danian. © The Palaeontological Association


Documento: Artículo
Título:Climate and sea-level changes across a shallow marine Cretaceous–Palaeogene boundary succession in Patagonia, Argentina
Autor:Vellekoop, J.; Holwerda, F.; Prámparo, M.B.; Willmott, V.; Schouten, S.; Cúneo, N.R.; Scasso, R.A.; Brinkhuis, H.
Filiación:Marine Palynology & Palaeoceanography, Laboratory of Palaeobotany & Palynology, Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Budapestlaan 4, Utrecht, 3584 CD, Netherlands
Division Geology, Department of Earth & Environmental Sciences, KU Leuven, Celestijnenlaan 200E, Leuven, 3001, Belgium
Staatliche Naturwissenschaftliche Sammlungen Bayerns (SNSB), Bayerische Staatssammlung für Paläontologie und Geologie, Richard-Wagner-Strasse 10, München, 80333, Germany
GeoBioTec, Faculdade de Ciências e Tecnologia (FCT), Universidade Nova de Lisboa, Campus da Caparica, Caparica, 2829-516, Portugal
Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA), CCT-CONICET, CC 330, Mendoza, 5500, Argentina
Department of Marine Microbiology & Biogeochemistry and Utrecht University, Royal Netherlands Institute for Sea Research, Texel, Netherlands
Faculty of Geosciences, Utrecht University, Budapestlaan 4, Utrecht, 3584 CD, Netherlands
Museo Paleontológico Egidio Feruglio – CONICET, Avenida Fontana 140, Trelew, Chubut, 9100, Argentina
Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires (IGeBA), Departamento de Ciencias Geológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires-CONICET, Ciudad Universitaria, Pabellón II, Buenos Aires, C1428, Argentina
Alfred Wegener Institute, Helmoltz Centre for Polar and Marine Research, Am Handelshafen 12, Bremerhaven, 27570, Germany
Palabras clave:Argentina; climate; Cretaceous; dinocysts; Palaeogene; sea level; biostratigraphy; Cretaceous-Paleogene boundary; depositional environment; dinoflagellate cyst; fossil assemblage; paleoceanography; paleoclimate; palynomorph; sea level change; shallow water; stratigraphic correlation; transgression; Argentina; Chubut; Patagonia; Dinophyceae
Página de inicio:519
Página de fin:534
Título revista:Palaeontology
Título revista abreviado:Palaeontology


  • Açikalin, S., Vellekoop, J., Ocakoğlu, F., Ömer Yilmaz, I., Smit, J., Altiner, S.T., Goderis, S., Brinkhuis, H., Geochemical and palaeontological characterization of a new K-Pg Boundary locality from the Northern branch of the Neo-Tethys: Mudurnu – Göynük Basin, NW Turkey (2015) Cretaceous Research, 52, pp. 251-267
  • Adatte, T., Keller, G., Stinnesbeck, W.T., Late Cretaceous to early Paleocene climate and sea-level fluctuations: the Tunisian record (2002) Palaeogeography, Palaeoclimatology, Palaeoecology, 178, pp. 165-196
  • Alegret, L., Rodr, F.J., Uchman, A., How bioturbation obscured the Cretaceous–Palaeogene boundary record (2015) Terra Nova, 27, pp. 225-230
  • Baldoni, A.M., Palynology of the lower Lefipán Formation (Upper Cretaceous) of Barranca de Los Perros, Chubut Province, Argentina. Part I, cryptogam spores and gymnosperm pollen (1992) Palynology, 16, pp. 117-136
  • Barreda, V.D., Palazzesi, L., Patagonian vegetation turnovers during the Paleogene-Early Neogene: origin of arid-adapted floras (2007) Botanical Reviews, 73, pp. 31-50
  • Barreda, V.D., Cúneo, N.R., Wilf, P., Currano, E.D., Scasso, R.A., Brinkhuis, H., Cretaceous/Paleogene floral turnover in Patagonia: drop in diversity, low extinction, and a Classopollis spike (2012) PLoS One, 7
  • Brinkhuis, H., Late Eocene to Early Oligocene dinoflagellate cysts from the Priabonian type-area (Northeast Italy): biostratigraphy and paleoenvironmental interpretation (1994) Palaeogeography, Palaeoclimatology, Palaeoecology, 107, pp. 121-163
  • Brinkhuis, H., Schiøler, P., Palynology of the Geulhemmerberg Cretaceous/Tertiary boundary section (Limburg, SE Netherlands) (1996) Geologie en Mijnbouw, 75, pp. 193-213
  • Brinkhuis, H., Zachariasse, W.J., Dinoflagellate cysts, sea level changes and planktonic foraminifers across the Cretaceous-Tertiary boundary at El Haria, northwest Tunisia (1988) Marine Micropaleontology, 13, pp. 153-191
  • Brinkhuis, H., Bujak, J.P., Smit, J., Versteegh, G.J.M., Visscher, H., Dinoflagellate-based sea surface temperature reconstructions across the Cretaceous–Tertiary boundary (1998) Palaeogeography, Palaeoclimatology, Palaeoecology, 141, pp. 67-83
  • Cattaneo, A., Steel, R.J., Transgressive deposits: a review of their variability (2003) Earth-Science Reviews, 62, pp. 187-228
  • Elliot, D.H., Askin, R.A., Kyte, F.T., Zinsmeister, W.J., Iridium and dinocysts at the Cretaceous-Tertiary boundary on Seymour Island, Antarctica: implications for the K-T event (1994) Geology, 22, pp. 675-678
  • Fazio, A.M., Castro, L.N., Scasso, R.A., Geoquímica de tierras raras y fosfogénesis en un engolfamiento marino del Cretácico Tardío-Paleoceno de Patagonia, Provincia del Chubut, Argentina (2013) Revista Mexicana de Ciencias Geologicas, 30, pp. 582-600
  • Fensome, R.A., Williams, G.L., The Lentin and Williams Index of fossil dinoflagellates: 2004 Edition (2004) Contributions Series-American Association of Stratigraphic Palynologists, 42, pp. 1-909
  • Fensome, R.A., MacRae, R.A., Williams, G.L., (2008) DINOFLAJ2, v. 1, ,, American Association of Stratigraphic Palynologists, Data Series 1
  • Galeotti, S., Brinkhuis, H., Huber, M., Records of post-Cretaceous-Tertiary boundary millennial-scale cooling from the western Tethys: a smoking gun for the impact-winter hypothesis? (2004) Geology, 32, pp. 529-532
  • de Gracianski, P.-C., Hardenbol, J., Jacquin, T., Vail, P.R., (1998) Mesozoic and Cenozoic sequence stratigraphy of European basins, 60. , SEPM Special Publication
  • Habib, D., Saeedi, F., The Manumiella seelandica global spike: cooling during regression at the close of the Maastrichtian (2007) Palaeogeography, Palaeoclimatology, Palaeoecology, 255, pp. 87-97
  • Habib, D., Moshkovitz, S., Kramer, C., Dinoflagellate and calcareous nannofossil response to sea-level change in Cretaceous-Tertiary boundary sections (1992) Geology, 20, pp. 165-168
  • Habib, D., Olsson, R.K., Liu, C., Moshkovitz, S., High-resolution biostratigraphy of sea-level low, biotic extinction, and chaotic sedimentation at the Cretaceous-Tertiary boundary in Alabama, north of the Chicxulub crater (1996) GSA Special Papers, 307, pp. 243-252
  • Hart, M.B., Yancey, T.E., Leighton, A.D., Miller, B., Liu, C., Smart, C.W., Twitchett, R.J., The Cretaceous-Paleogene boundary on the Brazos River, Texas: new stratigraphic sections and revised interpretations (2012) GCAGS Journal, 1, pp. 69-80
  • Herngreen, G.F.W., Schuurman, H.A.H.M., Verbeek, J.W., Brinkhuis, H., Burnett, J.A., Felder, W.M., Kedves, M., (1998) Biostratigraphy of Cretaceous/Tertiary boundary strata in the Curfs quarry, 61, p. 58. , Mededelingen Nederlands Instituut voor Toegepaste Geowetenschppen TNO
  • van Hinsbergen, D.J.J., de Groot, L.V., van Schaik, S.J., Spakman, W., Bijl, P.K., Sluijs, A., Langereis, C.G., Brinkhuis, H., A Paleolatitude Calculator for Paleoclimate Studies (2015) PLoS One, 10
  • Hopmans, E.C., Weijers, J.W.H., Schefus, E., Herfort, L., Sinninghe Damsté, J.S., Schouten, S., A novel proxy for terrestrial organic matter in sediments based on branched and isoprenoid tetraether lipids (2004) Earth & Planetary Science Letters, 224, pp. 107-116
  • Huguet, C., Schimmelmann, A., Thunell, R., Lourens, L.J., Sinninghe Damsté, J.S., Schouten, S., A study of the TEX 86 paleothermometer in the water column and sediments of the Santa Barbara Basin, California (2007) Paleoceanography, 22, p. PA3203
  • Huguet, C., de Lange, G.J., Gustafsson, Ö., Middelburg, J.J., Sinninghe Damsté, J.S., Schouten, S., Selective preservation of soil organic matter in oxidized marine sediments (Madeira Abyssal Plain) (2008) Geochimica et Cosmochimica Acta, 72, pp. 6061-6068
  • Iglesias, A., Wilf, P., Johnson, K.R., Zamuner, A.B., Cúneo, N.R., Matheos, S.D., Singer, B.S., A Paleocene lowland macroflora from Patagonia reveals significantly greater richness than North American analogs (2007) Geology, 35, pp. 947-950
  • Keller, G., Adatte, T., Tantawy, A., Berner, Z., Stinnesbeck, W., Stueben, D., Leanza, H., High stress late Maastrichtian – early Danian palaeoenvironment in the Neuquén Basin, Argentina (2007) Cretaceous Research, 28, pp. 939-960
  • Kiessling, W., Claeys, P., A geographic database approach to the KT boundary (2002) Geological and biological effects of impact events, pp. 83-140. , In, Buffetaut, E., Koeberl, C., (eds)., Springer
  • Kim, J.H., van der Meer, J., Schouten, S., Helmke, P., Willmott, V., Sangiorgi, F., Koc, N., Sinninghe Damsté, J.S., New indices and calibrations derived from the distribution of crenarchaeal isoprenoid tetraether lipids: implications for past sea surface temperature reconstructions (2010) Geochimica et Cosmochimica Acta, 74, pp. 4639-4654
  • Kominz, M.A., Browning, J.V., Miller, K.G., Sugarman, P.J., Mizintseva, S., Scotese, C.R., Late Cretaceous to Miocene sea-level estimates from the New Jersey and Delaware coastal plain coreholes: an error analysis (2008) Basin Research, 20, pp. 211-226
  • Kring, D.A., The Chicxulub impact event and its environmental consequences at the Cretaceous–Tertiary boundary (2007) Palaeogeography, Palaeoclimatology, Palaeoecology, 255, pp. 4-21
  • Lucas-Clark, J., Small peridinioid dinoflagellate cysts from the Paleocene of South Carolina, U.S.A (2006) Palynology, 30, pp. 183-210
  • MacLeod, N., Keller, G., Hiatus distributions and mass extinctions at the Cretaceous/Tertiary boundary (1991) Geology, 19, pp. 497-501
  • Medina, F.A., Malagnino, E.C., Bioestratigrafía del Cretácico superior-Paleoceno Marino de la Formación Lefipán, Barranca de los Perros, Río Chubut, Chubut (1990) V Congreso Argentino de Paleontología y Bioestratigrafía, San Miguel de Tucumán, Argentina, 7, pp. 137-142
  • Miller, K.G., Wright, J.D., Browning, J.V., Visions of ice sheets in a greenhouse world (2005) Marine Geology, 217, pp. 215-231
  • Molina, E., Alegret, L., Arenillas, I., Arz, J.A., Gallala, N., Hardenbol, J., von Salis, K., Zaghbib-Turki, D., The Global Boundary Stratotype Section and Point for the base of the Danian Stage (Paleocene, Paleogene’, Tertiary’, Cenozoic) at El Kef, Tunisia-Original definition and revision (2006) Episodes, 29, pp. 263-273
  • Nøhr-Hansen, H., Upper Cretaceous dinoflagellate cyst stratigraphy, onshore West Greenland (1996) Gronlands Geologiske Undersiøgelse Bulletin, 170, pp. 1-104
  • Olsson, R.K., Hemleben, C., Berggren, W.A., Huber, B.T., Atlas of Paleocene planktonic foraminifera (1999) Smithsonian Contributions to Paleobiology, 85, pp. 1-252
  • Olsson, R.K., Miller, K.G., Browning, J.V., Wright, J.D., Cramer, B.S., Sequence stratigraphy and sea-level change across the Cretaceous–Tertiary boundary on the New Jersey passive margin (2002) GSA Special Papers, 356, pp. 97-108
  • Palazzesi, L., Barreda, V.D., Major vegetation trends in the Tertiary of Patagonia (Argentina): a qualitative paleoclimatic approach based on palynological evidence (2007) Flora – Morphology, Distribution, Functional Ecology of Plants, 202, pp. 328-337
  • Papú, O.H., Prámparo, M.B., Náñez, C., Concheyro, A., Palinología y micropaleontología de la Formación Jagüel (Maastrichtiano-Daniano), perfil Opaso, Cuenca Neuquina, Argentina. Simposio Paleogeno de América del Sur (Buenos Aires. 1996) (1999) Actas Subsecretaria de Mlneria de la Nación, Servicio Geológlco Minero Argentino, 33, pp. 17-33
  • Prámparo, M.B., Papú, O.H., Late Maastrichtian dinoflagellate cysts from the Cerro Butaló section, southern Mendoza province, Argentina (2006) Journal of Micropalaeontology, 25, pp. 23-33
  • Pross, J., Brinkhuis, H., Organic-walled dinoflagellate cysts as paleoenvironmental indicators in the Paleogene; a synopsis of concepts (2005) Paläontologische Zeitschrift, 79, pp. 53-59
  • Ruiz, L., Scasso, R.A., Aberhan, M., Kiessling, W., Bande, A., Medina, F., Weidemeyer, S., La Formación Lefipán en el Valle Medio del Río Chubut: ambientes sedimentarios y su relación con la tectónica del Cretácico Tardío-Paleoceno (2005) XVI Congreso Geológico Argentino, La Plata, Argentina, Actas, 3, pp. 231-238
  • Scasso, R.A., Concheyro, A., Aberhan, M., Hecht, L., Medina, F.A., Tagle, R., A tsunami deposit at the Cretaceous/Paleogene boundary in the Neuquén Basin of Argentina (2005) Cretaceous Research, 26, pp. 283-297
  • Scasso, R.A., Aberhan, M., Ruiz, L., Weidemeyer, S., Medina, F.A., Kiessling, W., Integrated bio- and lithofacies analysis of coarse-grained, tide-dominated deltaic environments across the Cretaceous/Paleogene boundary in Patagonia, Argentina (2012) Cretaceous Research, 36, pp. 37-57
  • Schiøler, P., Wilson, G.J., Maastrichtian dinoflagellate zonation in the Dan Field, Danish North Sea (1993) Review of Palaeobotany & Palynology, 78, pp. 312-351
  • Schiøler, P., Brinkhuis, H., Roncaglia, L., Wilson, G.J., Dinoflagellate biostratigraphy and sequence stratigraphy of the type Maastrichtian (Upper Cretaceous), ENCI Quarry, The Netherlands (1997) Marine Micropaleontology, 31, pp. 65-95
  • Schouten, S., Hopmans, E.C., Schefus, E., Sinninghe Damsté, J.S., Distributional variations in marine crenarchaeotal membrane lipids: a new tool for reconstructing ancient sea water temperatures? (2002) Earth & Planetary Science Letters, 204, pp. 265-274
  • Schouten, S., Huguet, C., Hopmans, E.C., Kienhuis, M.V.M., Sinninghe Damsté, J.S., Analytical methodology for TEX86 paleothermometry by high-performance liquid chromatography/atmospheric pressure chemical ionization-mass spectrometry (2007) Analytical Chemistry, 79, pp. 2940-2944
  • Schouten, S., Hopmans, E.C., Sinninghe Damsté, J.S., The organic geochemistry of glycerol dialkyl glycerol tetraether lipids: a review (2013) Organic Geochemistry, 54, pp. 19-61
  • Schulte, P., Speijer, R., Mai, H., Kontny, A., The Cretaceous–Paleogene (K–P) boundary at Brazos, Texas: sequence stratigraphy, depositional events and the Chicxulub impact (2006) Sedimentary Geology, 184, pp. 77-109
  • Schulte, P., Alegret, L., Arenillas, I., Arz, J.A., Barton, P.J., Bown, P.R., Bralower, T.J., Willumsen, P.S., The Chicxulub asteroid impact and mass extinction at the Cretaceous-Paleogene boundary (2010) Science, 327, pp. 1214-1218
  • Slimani, H., New species of dinoflagellate cysts from the Campanian-Danian chalks at Hallembaye and Turnhout (Belgium) and at Beutenaken (the Netherlands) (2001) Journal of Micropalaeontology, 20, pp. 1-11
  • Slimani, H., Louwye, S., Toufiq, A., Dinoflagellate cysts from the Cretaceous–Paleogene boundary at Ouled Haddou, southeastern Rif, Morocco: biostratigraphy, paleoenvironments and paleobiogeography (2010) Palynology, 34, pp. 90-124
  • Slimani, H., Guédé, K.É., Williams, G.L., Asebriy, L., Ahmamou, M., Campanian to Eocene dinoflagellate cyst biostratigraphy from the Tahar and Sekada sections at Arba Ayacha, western External Rif, Morocco (2016) Review of Palaeobotany & Palynology, 228, pp. 26-46
  • Sluijs, A., Brinkhuis, H., A dynamic climate and ecosystem state during the Paleocene-Eocene Thermal Maximum – inferences from dinoflagellate cyst assemblages at the New Jersey Shelf (2009) Biogeosciences, 6, pp. 5163-5215
  • Sluijs, A., Pross, J., Brinkhuis, H., From greenhouse to icehouse; organic-walled dinoflagellate cysts as paleoenvironmental indicators in the Paleogene (2005) Earth-Science Reviews, 68, pp. 281-315
  • Spalletti, L.A., Estuarine and shallow-marine sedimentation in the upper Cretaceous-Lower Tertiary west-central Patagonian Basin (Argentina) (1996) Geological Society, London, Special Publications, 117, pp. 81-93
  • Tierney, J.E., Tingley, M.P., A Bayesian, spatially-varying calibration model for the TEX 86 proxy (2014) Geochimica et Cosmochimica Acta, 127, pp. 83-106
  • Vellekoop, J., Sluijs, A., Smit, J., Schouten, S., Weijers, J.W.H., Sinninghe Damsté, J.S., Brinkhuis, H., Rapid short-term cooling following the Chicxulub impact at the Cretaceous–Paleogene boundary (2014) Proceedings of the National Academy of Sciences, 111, pp. 7537-7541
  • Vellekoop, J., Smit, J., van de Schootbrugge, B., Weijers, J.W.H., Galeotti, S., Sinninghe Damsté, J.S., Brinkhuis, H., Palynological evidence for prolonged cooling along the Tunisian continental shelf following the K–Pg boundary impact (2015) Palaeogeography, Palaeoclimatology, Palaeoecology, 426, pp. 216-228
  • Vellekoop, J., Esmeray-Senlet, S., Miller, K.G., Browning, J.V., Sluijs, A., van de Schootbrugge, B., Sinninghe Damsté, J.S., Brinkhuis, H., Evidence for Cretaceous-Paleogene boundary bolide “impact winter” conditions from New Jersey, USA (2016) Geology, 44, pp. 619-622
  • Vellekoop, J., Holwerda, F., Prámparo, M.B., Willmott, V., Schouten, S., Cúneo, N.R., Scasso, R.A., Brinkhuis, H., Data from: Climate and sea level changes across a shallow marine Cretaceous-Paleogene boundary succession in Patagonia, Argentina (2017) Dryad Digital Repository, , 10.5061/dryad.r86pk
  • Walsh, E.M., Ingalls, A.E., Keil, R.G., Sources and transport of terrestrial organic matter in Vancouver Island fjords and the Vancouver-Washington Margin: a multiproxy approach using d13Corg, lignin phenols, and the ether lipid BIT index (2008) Limnology & Oceanography, 53, pp. 1054-1063
  • Weijers, J.W.H., Schouten, S., Spaargaren, O.C., Sinninghe Damsté, J.S., Occurrence and distribution of tetraether membrane lipids in soils: implications for the use of the TEX 86 proxy and the BIT index (2006) Organic Geochemistry, 37, pp. 1680-1693
  • Williams, G.L., Brinkhuis, H., Pearce, M.A., Fensome, R.A., Weegink, J.W., Southern Ocean and global dinoflagellate cyst events compared: index events for the Late Cretaceous–Neogene (2004) Proceedings of the Ocean Drilling Program, Scientific Results, 189, pp. 1-98. , In, Exon, N. F., Kennett, J. P., Malone, M. J., (eds)
  • Woelders, L., Speijer, R.P., Stable seafloor conditions, sea level and food supply during the latest Maastrichtian at Brazos River, Texas (2015) Marine Micropaleontology, 121, pp. 41-51
  • Woelders, L., Vellekoop, J., Kroon, D., Smit, J., Casadió, S., Prámparo, M.B., Dinarès-Turell, J., Speijer, R.P., Latest Cretaceous climatic and environmental change in the South Atlantic region (2017) Paleoceanography, , 10.1002/2016PA003007, published online 4 May
  • Zell, C., Kim, J.-H., Moreira-Turcq, P., Abril, G., Hopmans, E.C., Bonnet, M.-P., Lima Sobrinho, R., Sinninghe Damsté, J.S., Disentangling the origins of branched tetraether lipids and crenarchaeol in the lower Amazon River: implications for GDGT-based proxies (2013) Limnology & Oceanography, 58, pp. 343-353


---------- APA ----------
Vellekoop, J., Holwerda, F., Prámparo, M.B., Willmott, V., Schouten, S., Cúneo, N.R., Scasso, R.A.,..., Brinkhuis, H. (2017) . Climate and sea-level changes across a shallow marine Cretaceous–Palaeogene boundary succession in Patagonia, Argentina. Palaeontology, 60(4), 519-534.
---------- CHICAGO ----------
Vellekoop, J., Holwerda, F., Prámparo, M.B., Willmott, V., Schouten, S., Cúneo, N.R., et al. "Climate and sea-level changes across a shallow marine Cretaceous–Palaeogene boundary succession in Patagonia, Argentina" . Palaeontology 60, no. 4 (2017) : 519-534.
---------- MLA ----------
Vellekoop, J., Holwerda, F., Prámparo, M.B., Willmott, V., Schouten, S., Cúneo, N.R., et al. "Climate and sea-level changes across a shallow marine Cretaceous–Palaeogene boundary succession in Patagonia, Argentina" . Palaeontology, vol. 60, no. 4, 2017, pp. 519-534.
---------- VANCOUVER ----------
Vellekoop, J., Holwerda, F., Prámparo, M.B., Willmott, V., Schouten, S., Cúneo, N.R., et al. Climate and sea-level changes across a shallow marine Cretaceous–Palaeogene boundary succession in Patagonia, Argentina. Palaeontology. 2017;60(4):519-534.