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Prof. Dr Speijer, Robert
ORCID ResearcherID

Institute	Top \| Institute \| Publications \| Projects
Katholieke Universiteit Leuven; Departement Aard- en Omgevingswetenschappen; Afdeling Geologie, more Direct contact at institute: Tel.: +32-(0)16-32 64 04 E-mail:

Previous institute	Top \| Institute \| Publications \| Projects
KU Leuven; door Onderzoeksgroep Biogeologie & Paleoklimatologie, more

Projects (3)	Top \| Institute \| Publications \| Projects
Geo-biosphere interactions in the early Paleogene: climatic changes and sea-level fluctuations during the Danian/Selandian transition (60 millio n years ago), more Marine Research Drilling - The ESF Magellan Workshop Series., more Vlaamse deelname aan het Integrated Ocean Drilling Program (IODP) met het European Consortium for Ocean Research Drilling (ECORD)., more

Publications (87)	Top \| Institute \| Publications \| Projects
A1 Publications (75) [show]
Babila, T.L.; Penman, D.E.; Standish, C.D.; Doubrawa, M.; Bralower, T.J.; Robinson, M.M.; Self-Trail, J.M.; Speijer, R.P.; Stassen, P.; Foster, G.L.; Zachos, J.C. (2022). Surface ocean warming and acidification driven by rapid carbon release precedes Paleocene-Eocene Thermal Maximum. Science Advances 8(11): eabg1025. https://dx.doi.org/10.1126/sciadv.abg1025, more Clark, A.J.; Vellekoop, J.; Speijer, R.P. (2022). Hydrological differences between the Lutetian Paris and Hampshire basins revealed by stable isotopes of conid gastropods. Bull. Soc. Géol. Fr. 193: 3. https://dx.doi.org/10.1051/bsgf/2022002, more De Clercq, W.; Taelman, D.; Antonelli, F.; Briguglio, A.; de Ruijsscher, D.; Dreesen, R.; Dumolyn, J.; Fieremans, N.; Speijer, R.P.; Trachet, J.; Vermeersch, J. (2022). Two odd ones out: Mediterranean ballast stones and Italian maritime connections in the Medieval Bruges' harbor system. J. Marit. Archaeol. 17(4): 579-602. https://dx.doi.org/10.1007/s11457-022-09344-1, more Doubrawa, M.; Stassen, P.; Robinson, M.M.; Babila, T.L.; Zachos, J.C.; Speijer, R.P. (2022). Shelf ecosystems along the US Atlantic Coastal Plain prior to and during the Paleocene-Eocene Thermal Maximum: insights into the stratigraphic architecture. Paleoceanography and Paleoclimatology 37(10): e2022PA004475. https://dx.doi.org/10.1029/2022PA004475, more Martens, L.; Stassen, P.; Steurbaut, E.; Speijer, R.P. (2022). Assessing Nummulites geochemistry as a proxy for early Eocene palaeotemperature evolution in the North Sea Basin. J. Geol. Soc. Lond. 179(4): jgs2021-102. https://dx.doi.org/10.1144/jgs2021-102, more Vancoppenolle, I.; Vellekoop, J.; Doubrawa, M.; Kaskes, P.; Sinnesael, M.; Jagt, J.W.M.; Claeys, P.; Speijer, R.P. (2022). The benthic foraminiferal response to the mid-Maastrichtian event in the NW-European chalk sea of the Maastrichtian type area. Geol. Mijnb. 101: e12. https://dx.doi.org/10.1017/njg.2022.10, more Vellekoop, J.; Kaskes, P.; Sinnesael, M.; Huygh, J.; Déhais, T.; Jagt, J.W.M.; Speijer, R.P.; Claeys, P. (2022). A new age model and chemostratigraphic framework for the Maastrichtian type area (southeastern Netherlands, northeastern Belgium). Newsl. Stratigr. preprint. https://dx.doi.org/10.1127/nos/2022/0703, more Bornemann, A.; Jehle, S.; Lägel, F.; Deprez, A.; Petrizzo, M.R.; Speijer, R.P. (2021). Planktic foraminiferal response to an early Paleocene transient warming event and biostratigraphic implications. Int. J. Earth Sci. 110(2): 583-594. https://hdl.handle.net/10.1007/s00531-020-01972-z, more de Winter, N.J.; Vellekoop, J.; Clark, A.J.; Stassen, P.; Speijer, R.P.; Claeys, P. (2020). The giant marine gastropod Campanile giganteum (Lamarck, 1804) as a high-resolution archive of seasonality in the Eocene greenhouse world. Geochem. Geophys. Geosyst. 21(4): e2019GC008794. https://hdl.handle.net/10.1029/2019GC008794, more Stassen, P.; Steurbaut, E.; Speijer, R.P. (2020). Comments on "Paleoecology and paleobiogeography of Paleocene ostracods in Dineigil area, south western Desert, Egypt." by Youssef et al., Journal of African Earth Sciences, 131 (2017) 62-70. J. Afr. Earth Sci. 163: 103461. https://hdl.handle.net/10.1016/j.jafrearsci.2019.03.013, more Vellekoop, J.; Van Tilborgh, K.H.; Van Knippenberg, P.; Jagt, J.W.M.; Stassen, P.; Goolaerts, S.; Speijer, R.P. (2020). Type-Maastrichtian gastropod faunas show rapid ecosystem recovery following the Cretaceous-Palaeogene boundary catastrophe. Palaeontology 63(2): 349-367. https://dx.doi.org/10.1111/pala.12462, more Hollis, C.J.; Dunkley Jones, T.; Anagnostou, E.; Bijl, P.K.; Cramwinckel, M.J.; Cui, Y.; Dickens, G.R.; Edgar, K.M.; Eley, Y.; Evans, D.; Foster, G.L.; Frieling, J.; Inglis, G.N.; Kennedy, E.M.; Kozdon, R.; Lauretano, V.; Lear, C.H.; Littler, K.; Lourens, L.; Meckler, A.N.; Naafs, B.D.A.; Pälike, H.; Pancost, R.D.; Pearson, P.N.; Röhl, U.; Royer, D.L.; Salzmann, U.; Schubert, B.A.; Seebeck, H.; Sluijs, A.; Speijer, R.P.; Stassen, P.; Tierney, J.E.; Tripati, A.K.; Wade, B.S.; Westerhold, T.; Witkowski, C.R.; Zachos, J.C.; Zhang, Y.G.; Huber, M.; Lunt, D.J. (2019). The DeepMIP contribution to PMIP4: methodologies for selection, compilation and analysis of latest Paleocene and early Eocene climate proxy data, incorporating version 0.1 of the DeepMIP database. Geosci. Model Dev. 12(7): 3149-3206. https://dx.doi.org/10.5194/gmd-12-3149-2019, more Jehle, S.; Bornemann, A.; Lägel, A.F.; Deprez, A.; Speijer, R.P. (2019). Paleoceanographic changes across the Latest Danian Event in the South Atlantic Ocean and planktic foraminiferal response. Palaeogeogr. Palaeoclimatol. Palaeoecol. 525: 1-13. https://dx.doi.org/10.1016/j.palaeo.2019.03.024, more Vellekoop, J.; Woelders, L.; Sluijs, A.; Miller, K.G.; Speijer, R.P. (2019). Phytoplankton community disruption caused by latest Cretaceous global warming. Biogeosciences 16(21): 4201-4210. https://dx.doi.org/10.5194/bg-16-4201-2019, more Arreguin-Rodriguez, G.J.; Thomas, E.; D'haenens, S.; Speijer, R.P.; Alegret, L. (2018). Early Eocene deep-sea benthic foraminiferal faunas: recovery from the Paleocene Eocene Thermal Maximum extinction in a greenhouse world. PLoS One 13(2): e0193167. https://dx.doi.org/10.1371/journal.pone.0193167, more de Winter, N.J.; Vellekoop, J.; Vorsselmans, R.; Golreihan, A.; Soete, J.; Petersen, S.V.; Meyer, K.W.; Casadio, S.; Speijer, R.P.; Claeys, P. (2018). An assessment of latest Cretaceous Pycnodonte vesicularis (Lamarck, 1806) shells as records for palaeoseasonality: a multi-proxy investigation. Clim. Past 14(6): 725-749. https://dx.doi.org/10.5194/cp-14-725-2018, more Donders, T.H.; van Helmond, N.A.G.M.; Verreussel, R.; Munsterman, D.; ten Veen, J.; Speijer, R.P.; Weijers, J.W.H.; Sangiorgi, F.; Peterse, F.; Reichart, G.-J.; Sinninghe Damsté, J.S.; Lourens, L.; Kuhlmann, G.; Brinkhuis, H. (2018). Land–sea coupling of early Pleistocene glacial cycles in the southern North Sea exhibit dominant Northern Hemisphere forcing. Clim. Past 14(3): 397-411. https://doi.org/10.5194/cp-14-397-2018, more Giraldo-Gomez, V.M.; Mutterlose, J.; Podlaha, O.G.; Speijer, R.P.; Stassen, P. (2018). Benthic Foraminifera and geochemistry acroos the Paleocene-Eocene thermal maximum interval in Jordan. J. Foramin. Res. 48(2): 100-120, more Vellekoop, J.; Woelders, L.; van Helmond, N.A.G.M.; Galeotti, S.; Smit, J.; Slomp, C.P.; Brinkhuis, H.; Claeys, P.; Speijer, R.P. (2018). Shelf hypoxia in response to global warming after the Cretaceous-Paleogene boundary impact. Geology (Boulder Colo.) 46(8): 683-686. https://dx.doi.org/10.1130/G45000.1, more Woelders, L.; Vellekoop, J.; Weltje, G.J.; de Nooijer, L.; Reichart, G.-J.; Peterse, F.; Claeys, P.; Speijer, R.P. (2018). Robust multi-proxy data integration, using late Cretaceous paleotemperature records as a case study. Earth Planet. Sci. Lett. 500: 215-224. https://doi.org/10.1016/j.epsl.2018.08.010, more Deprez, A.; Jehle, S.; Bornemann, A.; Speijer, R.P. (2017). Pronounced biotic and environmental change across the latest Danian warming event (LDE) at Shatsky Rise, Pacific Ocean (ODP Site 1210). Mar. Micropaleontol. 137: 31-45. https://dx.doi.org/10.1016/j.marmicro.2017.10.001, more Deprez, A.; Jehle, S.; Bornemann, A.; Speijer, R.P. (2017). Differential response at the seafloor during Palaeocene and Eocene ocean warming events at Walvis Ridge, Atlantic Ocean (ODP Site 1262). Terra nova (Print) 29(1): 71-76. https://dx.doi.org/10.1111/ter.12250, more Vellekoop, J.; Woelders, L.; Açikalin, S.; Smit, J.; van de Schootbrugge, B.; Yilmaz, I.Ö.; Brinkhuis, H.; Speijer, R.P. (2017). Ecological response to collapse of the biological pump following the mass extinction at the Cretaceous–Paleogene boundary. Biogeosciences 14(4): 885-900. https://dx.doi.org/10.5194/bg-14-885-2017, more Woelders, L.; Vellekoop, J.; Kroon, D.; Smit, J.; Casadio, S.; Pramparo, M.B.; Dinares-Turell, J.; Peterse, F.; Sluijs, A.; Lenaerts, J.T.M.; Speijer, R.P. (2017). Latest Cretaceous climatic and environmental change in the South Atlantic region. Paleoceanography 32(5): 466-483. https://dx.doi.org/10.1002/2016PA003007, more Bornemann, A.; D'haenens, S.; Norris, R.D.; Speijer, R.P. (2016). The demise of the early Eocene greenhouse - Decoupled deep and surface water cooling in the eastern North Atlantic. Global Planet. Change 145: 130-140. https://dx.doi.org/10.1016/j.gloplacha.2016.08.010, more Meilijson, A.; Ashckenazi-Polivoda, S.; Illner, P.; Alsenz, H.; Speijer, R.P.; Almogi-Labin, A.; Feinstein, S.; Puttmann, W.; Abramovich, S. (2016). Evidence for specific adaptations of fossil benthic foraminifera to anoxic-dysoxic environments. Paleobiology 42(1): 77-97. https://dx.doi.org/10.1017/pab.2015.31, more Van Bael, R.; Deprez, A.; Stassen, P.; Bornemann, A.; Speijer, R.P. (2016). Taphonomic impact of ultrasonic treatment on foraminifera from a deep-sea carbonate ooze. J. Micropalaeontol. 35: 229-231. https://dx.doi.org/10.1144/jmpaleo2015-046, more Acikalin, S; Vellekoop, J,; Ocakoglu, F; Yilmaz, O; Smit, J; Altiner, O; Goderis, S.; Vonhof, H; Speijer, R.P.; Woelders, L.; Fornaciari, E; Brinkhuis, H (2015). Geochemical and palaeontological characterization of a new K-Pg Boundary locality from the Northern branch of the Neo-Tethys: Mudurnu - Göynük Basin, NW Turkey. Cretac. Res. 52(Part A): 251-267. http://dx.doi.org/10.1016/j.cretres.2014.07.011, more Deprez, A.; Tesseur, S.; Stassen, P.; D'haenens, S.; Steurbaut, E.; King, C.; Claeys, P.; Speijer, R.P. (2015). Early Eocene environmental development in the northern Peri-Tethys (Aktulagay, Kazakhstan) based on benthic foraminiferal assemblages and stable isotopes (O, C). Mar. Micropaleontol. 115: 59-71. https://dx.doi.org/10.1016/j.marmicro.2014.11.003, more Jehle, S.; Bornemann, A.; Deprez, A.; Speijer, R.P. (2015). The impact of the latest Danian event on planktic foraminiferal faunas at ODP site 1210 (Shatsky Rise, Pacific Ocean). PLoS One 10(11): e0141644. dx.doi.org/10.1371/journal.pone.0141644, more Stassen, P.; Thomas, E.; Speijer, R.P. (2015). Paleocene-Eocene Thermal Maximum environmental change in the New Jersey Coastal Plain: benthic foraminiferal biotic events. Mar. Micropaleontol. 115: 1-23. https://dx.doi.org/10.1016/j.marmicro.2014.12.001, more Woelders, L.; Speijer, R.P. (2015). Stable seafloor conditions, sea level and food supply during the latest Maastrichtian at Brazos River, Texas. Mar. Micropaleontol. 121: 41-51. https://dx.doi.org/10.1016/j.marmicro.2015.10.002, more Bornemann, A; Norris, D; Lyman, A; D'haenens, S.; Groeneveld, J; Rohl, U; Farley, A; Speijer, R.P. (2014). Persistent environmental change after the Paleocene-Eocene Thermal Maximum in the eastern North Atlantic. Earth Planet. Sci. Lett. 394: 70-81. dx.doi.org/10.1016/j.epsl.2014.03.017, more D'haenens, S.; Bornemann, A; Claeys, P.; Rohl, U; Steurbaut, E.; Speijer, R.P. (2014). A transient deep-sea circulation switch during Eocene Thermal Maximum 2. Paleoceanography 29(5): 370-388. dx.doi.org/10.1002/2013PA002567, more Meilijson, A; Ashckenazi-Polivoda, S; Ron-Yankovich, L; Illner, P; Alsenz, H; Speijer, R.P.; Almogi-Labin, A; Feinstein, S; Berner, Z; Puttmann, W; Abramovich, S (2014). Chronostratigraphy of the Upper Cretaceous high productivity sequence of the southern Tethys, Israel. Cretac. Res. 50: 187-213. dx.doi.org/10.1016/j.cretres.2014.04.006, more Nguyen, T.M.P.; Speijer, R.P. (2014). A new procedure to assess dissolution based on experiments on Pliocene-Quaternary foraminifera (ODP Leg 160, Eratosthenes Seamount, Eastern Mediterranean). Mar. Micropaleontol. 106: 22-39. dx.doi.org/10.1016/j.marmicro.2013.11.004, more Kost'ak, M.; Jagt, J.W.M.; Speijer, R.P.; Stassen, P.; Steurbaut, E. (2013). New Paleocene sepiid coleoids (Cephalopoda) from Egypt: evolutionary significance and origin of the sepiid 'Rostrum'. PLoS One 8(11): 1-19. https://dx.doi.org/10.1371/journal.pone.0081180, more Pirkenseer, C.M.; Steurbaut, E.; Abels, H.A.; King, C.; Speijer, R.P. (2013). An expanded lower Eocene shelf sequence from the eastern Aquitaine Basin, SW France: biostratigraphy, biofacies, and stable carbon and oxygen isotopes. Newsl. stratigr. 46(3): 339-361. dx.doi.org/10.1127/0078-0421/2013/0037, more Schulte, P.; Schwark, L.; Stassen, P.; Kouwenhoven, T.J.; Bornemann, A.; Speijer, R.P. (2013). Black shale formation during the Latest Danian Event and thePaleocene-Eocene Thermal Maximum in central Egypt: Two of a kind? Palaeogeogr. Palaeoclimatol. Palaeoecol. 371: 9-25. dx.doi.org/10.1016/j.palaeo.2012.11.027, more Sprong, J.; Kouwenhoven, T.J.; Bornemann, A.; Dupuis, C.; Speijer, R.P.; Stassen, P.; Steurbaut, E. (2013). In search of the Latest Danian Event in a paleobathymetric transect off Kasserine Island, north-central Tunisia. Palaeogeogr. Palaeoclimatol. Palaeoecol. 379-380: 1-16. dx.doi.org/10.1016/j.palaeo.2013.01.018, more Stassen, P.; Dupuis, C.; Steurbaut, E.; Yans, J.; Storme, J.-Y.; Morsi, A.M.; Lacumin, P.; Speijer, R.P. (2013). Unraveling the Paleocene-Eocene thermal maximum in shallow marine Tethyan environments: the Tunisian stratigraphic record. Newsl. Stratigr. 46(1): 69-91. dx.doi.org/10.1127/0078-0421/2013/0028, more Bornemann, A.; Pirkenseer, C.M.; De Deckker, P.; Speijer, R.P. (2012). Oxygen and carbon isotope fractionation of marine ostracod calcite from the eastern Mediterranean Sea. Chem. Geol. 310-311: 114-125. dx.doi.org/10.1016/j.chemgeo.2012.03.028, more Bornemann, A.; Pirkenseer, C.M.; Steurbaut, E.; Speijer, R.P. (2012). Early Paleogene d¹³C and d¹⁸O records based on marine ostracodes: implications for the upper Danian succession at Sidi Nasseur (Tunisia) and their application value in paleoceanography. Austrian J. Earth Sci. 105(1): 77-87, more D'haenens, S.; Bornemann, A.; Stassen, P.; Speijer, R.P. (2012). Multiple early Eocene benthic foraminiferal assemblage and d¹³C fluctuations at DSDP Site 401 (Bay of Biscay — NE Atlantic). Mar. Micropaleontol. 88-89: 15-35. http://dx.doi.org/10.1016/j.marmicro.2012.02.006, more D'haenens, S.; Bornemann, A.; Roose, K.; Claeys, P.; Speijer, R.P. (2012). Stable isotope paleoecology (d¹³C and d¹⁸O) of early Eocene Zeauvigerina aegyptiaca from the North Atlantic (DSDP Site 401). Austrian J. Earth Sci. 105(1): 179-188, more Speijer, R.P.; Scheibner, C.; Stassen, P.; Morsi, A.-M.M. (2012). Response of marine ecosystems to deep-time global warming: a synthesis of biotic patterns across the Paleocene-Eocene thermal maximum (PETM). Austrian J. Earth Sci. 105(1): 6-16, more Sprong, J.; Kouwenhoven, T.J.; Bornemann, A.; Schulte, P.; Steurbaut, E.; Youssef, M.; Speijer, R.P. (2012). Characterization of the Latest Danian Event by means of benthic foraminiferal assemblages along a depth transect at the southern Tethyan margin (Nile Basin, Egypt). Mar. Micropaleontol. 86-87: 15-31. http://dx.doi.org/10.1016/j.marmicro.2012.01.001, more Stassen, P.; Dupuis, C.; Steurbaut, E.; Yans, J.; Speijer, R.P. (2012). Perturbation of a Tethyan coastal environment during the Paleocene–Eocene thermal maximum in Tunisia (Sidi Nasseur and Wadi Mezaz). Palaeogeogr. Palaeoclimatol. Palaeoecol. 317-318: 66-92. http://dx.doi.org/10.1016/j.palaeo.2011.12.011, more Stassen, P.; Thomas, E.; Speijer, R.P. (2012). Restructuring outer neritic foraminiferal assemblages in the aftermath of the Paleocene-Eocene thermal maximum. J. Micropalaeontol. 31(1): 89-93. https://dx.doi.org/10.1144/0262-821X11-026, more Stassen, P.; Thomas, E.; Speijer, R.P. (2012). The progression of environmental changes during the onset of the Paleocene-Eocene thermal maximum (New Jersey Coastal Plain). Austrian J. Earth Sci. 105(1): 169-178, more Stassen, P.; Steurbaut, E.; Morsi, A.-M.M.; Schulte, P.; Speijer, R.P. (2012). Biotic impact of Eocene thermal maximum 2 in a shelf setting (Dababiya, Egypt). Austrian J. Earth Sci. 105(1): 154-160, more Vanhove, D.; Stassen, P.; Speijer, R.P.; Claeys, P.; Steurbaut, E. (2012). Intra- and intertaxon stable O and C isotope variability of fossil fish otoliths: an early Eocene test case. Austrian J. Earth Sci. 105(1): 200-207, more Morsi, A.-M.M.; Speijer, R.P.; Stassen, P.; Steurbaut, E. (2011). Shallow marine ostracode turnover in response to environmental change during the Paleocene–Eocene thermal maximum in northwest Tunisia. J. Afr. Earth Sci. 59(2-3): 243-268. http://dx.doi.org/10.1016/j.jafrearsci.2010.11.001, more Nguyen, T.M.P.; Petrizzo, M.R.; Stassen, P.; Speijer, R.P. (2011). Dissolution susceptibility of Paleocene-Eocene planktic foraminifera: implications for palaeoceanographic reconstructions. Mar. Micropaleontol. 81(1-2): 1-21. http://dx.doi.org/10.1016/j.marmicro.2011.07.001, more Schmitz, B.; Pujalte, V.; Eustoquio, M.; Monechi, S.; Orue-Etxebarria, X; Speijer, R.P.; Alegret, L.; Apellaniz, E.; Arenillas, I.; Aubry, M.P.; Baceta, J.I.; Berggren, W.A.; Bernaola, G.; Caballero, F.; Clemmensen, A; Dinarès-Turell, J.; Dupuis, C.; Heilmann-Clausen, C.; Hilario Orús, A.; Knox, R.; Martín-Rubio, M.; Ortiz, S.; Payros, A.; Petrizzo, M.R.; Sprong, J.; Steurbaut, E.; Thomsen, E. (2011). The Global Stratotype Sections and Points for the bases of the Selandian (Middle Paleocene) and Thanetian (Upper Paleocene) stages at Zumaia, Spain. Episodes 34(4): 220-243, more Schulte, P.; Scheibner, C.; Speijer, R.P. (2011). Fluvial discharge and sea-level changes controlling black shale deposition during the Paleocene-Eocene Thermal Maximum in the Dababiya Quarry section, Egypt. Chem. Geol. 285(1-4): 167-183. dx.doi.org/10.1016/j.chemgeo.2011.04.004, more Sprong, J.; Youssef, M.A.; Bornemann, A.; Steurbaut, E.; Stassen, P.; Kouwenhoven, T.J.; Speijer, R.P. (2011). A multi-proxy record of the Latest Danian Event at Gebel Qreiya, Eastern Desert, Egypt. J. Micropalaeontol. 30(2): 167-182. dx.doi.org/10.1144/0262-821X10-023, more Vanhove, D.; Stassen, P.; Speijer, R.P.; Steurbaut, E. (2011). Assessing paleotemperature and seasonality during the Early Eocene climatic optimum (EECO) in the Belgian basin by means of fish otolith stable O and C isotopes. Geol. Belg. 14(3-4): 143-158, more Bornemann, A.; Schulte, P.; Sprong, J.; Steurbaut, E.; Youssef, M.; Speijer, R.P. (2009). Latest Danian carbon isotope anomaly and associated environmental change in the southern Tethys (Nile Basin, Egypt). J. Geol. Soc. Lond. 166(6): 1135-1142. http://dx.doi.org/10.1144/0016-76492008-104, more Nguyen, T.M.P.; Petrizzo, M.R.; Speijer, R.P. (2009). Experimental dissolution of a fossil foraminiferal assemblage (Paleocene-Eocene Thermal Maximum, Dababiya, Egypt): Implications for paleoenvironmental reconstructions. Mar. Micropaleontol. 73(3-4): 241-258. dx.doi.org/10.1016/j.marmicro.2009.10.005, more Scheibner, C; Speijer, R.P. (2009). Recalibration of the Tethyan shallow-benthic zonation across the Paleocene-Eocene boundary: the Egyptian record. Geol. Acta 7(1-2): 195-214. http://dx.doi.org/10.1344/105.000000267, more Schulte, P.; Speijer, R.P. (2009). Late Maastrichtian-Early Paleocene sea level and climate changes in the Antioch Church Core (Alabama, Gulf of Mexico margin, USA): A multi-proxy approach. Geol. Acta 7(1-2): 11-34. http://dx.doi.org/10.1344/105.000000279, more Sprong, J.; Speijer, R.P.; Steurbaut, E. (2009). Biostratigraphy of the Danian/Selandian transition in the southern Tethys. Special reference to the Lowest Occurrence of planktic foraminifera Igorina albeari. Geol. Acta 7(1-2): 63-77. http://dx.doi.org/10.1344/105.000000271, more Stassen, P.; Dupuis, C.; Morsi, A.-M.M.; Steurbaut, E.; Speijer, R.P. (2009). Reconstruction of a latest Paleocene shallow-marine eutrophic paleoenvironment at Sidi Nasseur (Central Tunisia) based on foraminifera, ostracoda, calcareous nannofossils and stable isotopes (delta¹³C delta¹⁸O). Geol. Acta 7(1-2): 93-112. http://dx.doi.org/10.1344/105.000000273, more Buckeridge, J.S.; Jagt, J.W.M.; Speijer, R.P. (2008). Verruca punica, a new species of verrucomorph barnacle (Crustacea, Cirripedia, Thoracica) from the Lower Danian (Palaeocene) of Tunisia. Zootaxa 1844: 37-46, more Guasti, E; Speijer, R.P. (2008). Acarinina multicamerata n. sp. (Foraminifera): a new marker for the Paleocene-Eocene thermal maximum. J. Micropalaeontol. 27: 5-12, more Petrizzo, M.R.; Leoni, G.; Speijer, R.P.; De Bernardi, B.; Felletti, F. (2008). Dissolution susceptibility of some Paleogene planktonic foraminifera from ODP site 1209 (shatsky rise, Pacific Ocean). J. Foramin. Res. 38(4): 357-371. https://dx.doi.org/10.2113/gsjfr.38.4.357, more Scheibner, C.; Speijer, R.P. (2008). Late Paleocene–early Eocene Tethyan carbonate platform evolution — A response to long- and short-term paleoclimatic change. Earth-Sci. Rev. 90(3-4): 71-102. https://dx.doi.org/10.1016/j.earscirev.2008.07.002, more Speijer, R.P.; Van Loo, D.; Masschaele, B; Vlassenbroeck, J.; Cnudde, V.; Jacobs, P. (2008). Quantifying foraminiferal growth with high-resolution X-ray computed tomography: New opportunities in foraminiferal ontogeny, phylogeny, and paleoceanographic applications. Geosphere 4(4): 760-763. https://dx.doi.org/10.1130/GES00176.1, more Van Itterbeeck, J.; Sprong, J.; Dupuis, C.; Speijer, R.P.; Steurbaut, E. (2007). Danian/Selandian boundary stratigraphy, paleoenvironment and Ostracoda from Sidi Nasseur, Tunisia. Mar. Micropaleontol. 62(4): 211-234. dx.doi.org/10.1016/j.marmicro.2006.08.006, more Ernst, S.R.; Guasti, E.; Dupuis, C.; Speijer, R.P. (2006). Environmental perturbation in the southern Tethys across the Paleocene/Eocene boundary (Dababiya, Egypt): Foraminiferal and clay mineral records. Mar. Micropaleontol. 60(1): 89-111. dx.doi.org/10.1016/j.marmicro.2006.03.002, more Guasti, E.; Speijer, R.P.; Brinkhuis, H.; Smit, J.; Steurbaut, E. (2006). Paleoenvironmental change at the Danian-Selandian transition in Tunisia:Foraminifera, organic-walled dinoflagellate cyst and calcareousnannofossil records. Mar. Micropaleontol. 59(3-4): 210-229. dx.doi.org/10.1016/j.marmicro.2006.02.008, more Schulte, P.; Speijer, R.; Mai, H.; Kontny, A. (2006). The Cretaceous-Paleogene (K-P) boundary at Brazos, Texas: Sequence stratigraphy, depositional events and the Chicxulub impact. Sediment. Geol. 184(1-2): 77-109. dx.doi.org/10.1016/j.sedgeo.2005.09.021, more Guasti, E.; Kouwenhoven, T.J.; Brinkhuis, H.; Speijer, R.P. (2005). Paleocene sea-level and productivity changes at the southern Tethyan margin (El Kef, Tunisia). Mar. Micropaleontol. 55(1-2): 1-17. dx.doi.org/10.1016/j.marmicro.2005.01.001, more Scheibner, C.; Speijer, R.P.; Marzouk, A.M. (2005). Turnover of larger foraminifera during the Paleocene-Eocene Thermal Maximum and paleoclimatic control on the evolution of platform ecosystems. Geotechnique 33(6): 493-496. https://dx.doi.org/10.1130/G21237.1, more
Peer reviewed publication [show]
Scheibner, C.; Speijer, R.P. (2008). Decline of coral reefs during late Paleocene to early Eocene global warming. eE 3: 19-26. http://dx.doi.org/10.5194/ee-3-19-2008, more
Abstracts (10) [show]
Clark, A.; Vellekoop, J.; De Winter, N.; Claeys, P.; Stassen, P.; Speijer, R.P. (2018). Campanile giganteum (Lamarck 1804) from the middle Lutetian (~45 Ma) Paris Basin: a potential seasonality archive?, in: 6^th International Geologica Belgica Meeting 2018. , more Doubrawa, M.; Stassen, P.; Vanlook, L.; Robinson, M.M.; Speijer, R.P. (2018). Shelf ecosystems prior and during the PETM along the US Atlantic Coastal Plain, in: 6^th International Geologica Belgica Meeting 2018. , more Martens, L.; Stassen, P.; Steurbaut, E.; Speijer, R.P. (2018). Geochemistry of Nummulites as a proxy for the Eocene paleotemperature evolution in the Southern North Sea Basin: an Ypresian test case, in: 6^th International Geologica Belgica Meeting 2018. , more Stassen, P.; Steurbaut, E.; Speijer, R.P. (2018). Foraminiferal response to early Eocene climate variability in the North Sea Basin, in: 6^th International Geologica Belgica Meeting 2018. , more Vellekoop, J.; Sluijs, A.; Speijer, R.P. (2018). An acme of the dinoflagellate cyst Palynodinium grallator, Gocht, 1970; a marker for the late Maastrichtian warming event at Northern mid-latitudes?, in: 6^th International Geologica Belgica Meeting 2018. , more Deprez, A.; Jehle, S.; Bornemann, A.; Speijer, R.P. (2016). Deep-sea benthic foraminiferal faunal and isotopic records of the Latest Danian Event from Walvis Ridge (ODP Site 1262), Southern Atlantic Ocean, in: Baele, J.-M. et al. Proceedings of the 5^th International Geologica Belgica Congress: 26–29 January 2016 – Mons, Belgium. pp. 235, more Stassen, P.; Speijer, R.P.; Devleeschouwer, X.; Abels, H.A.; King, C.; Willems, W.; Steurbaut, E. (2016). Early Eocene climate changes in the North Sea Basin: a Belgian perspective, in: Baele, J.-M. et al. Proceedings of the 5^th International Geologica Belgica Congress: 26–29 January 2016 – Mons, Belgium. pp. 237, more D'haenens, S.; Bornemann, A.; Speijer, R.P. (2012). The PETM and ETM2: reset buttons for benthic ecosystem evolution?, in: Devleeschouwer, X. et al. Abstract Book. 4^th International Geologica Belgica Meeting 2012, September 11-14, Brussels, Belgium. pp. 40, more Stassen, P.; Thomas, E.; Steurbaut, E.; Speijer, R.P. (2012). Variable benthic foraminiferal ecosystem responses to the PETM in shelf environments, in: Devleeschouwer, X. et al. Abstract Book. 4^th International Geologica Belgica Meeting 2012, September 11-14, Brussels, Belgium. pp. 50, more Vanhove, D.; Vanhove, D.; Speijer, R.; Steurbaut, E. (2012). Fish otolith stable isotope paleothermometry in the early Paleogene: limitations and future directions, in: Devleeschouwer, X. et al. Abstract Book. 4^th International Geologica Belgica Meeting 2012, September 11-14, Brussels, Belgium. pp. 53, more
Thesis (co-)promotor [show]
Van Tilborgh, K. (2010). Gastropoda en andere invertebrata van de Krijt/Paleogeen overgang in Zuid-Limburg. MSc Thesis. Katholieke Universiteit, Faculteit Wetenschappen: Leuven. 238 p. pp., more

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