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Robert P. Speijer

Robert P. Speijer

Robert P. Speijer publication distribution in Earth Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where Robert P. Speijer sits on this spectrum.

38–42 publications: 1 scientists 43–47 publications: 0 scientists 48–52 publications: 3 scientists 53–57 publications: 8 scientists 58–62 publications: 11 scientists 63–67 publications: 16 scientists 68–72 publications: 24 scientists 73–77 publications: 31 scientists 78–82 publications: 49 scientists 83–87 publications: 77 scientists 88–92 publications: 86 scientists 93–97 publications: 88 scientists 98–102 publications: 92 scientists 103–107 publications: 84 scientists 108–112 publications: 102 scientists 113–117 publications: 108 scientists 118–122 publications: 117 scientists 123–127 publications: 126 scientists 128–132 publications: 146 scientists 133–137 publications: 114 scientists 138–142 publications: 102 scientists 143–147 publications: 127 scientists 148–152 publications: 102 scientists 153–157 publications: 112 scientists 158–162 publications: 102 scientists 163–167 publications: 127 scientists 168–172 publications: 121 scientists 173–177 publications: 112 scientists 178–182 publications: 109 scientists 183–187 publications: 98 scientists 188–192 publications: 92 scientists 193–197 publications: 105 scientists 198–202 publications: 77 scientists 203–207 publications: 80 scientists 208–212 publications: 89 scientists 213–217 publications: 70 scientists 218–222 publications: 74 scientists 223–227 publications: 74 scientists 228–232 publications: 70 scientists 233–237 publications: 67 scientists 238–242 publications: 59 scientists 243–247 publications: 67 scientists 248–252 publications: 51 scientists 253–257 publications: 46 scientists 258–262 publications: 41 scientists 263–267 publications: 39 scientists 268–272 publications: 34 scientists 273–277 publications: 39 scientists 278–282 publications: 35 scientists 283–287 publications: 36 scientists 288–292 publications: 35 scientists 293–297 publications: 29 scientists 298–302 publications: 23 scientists 303–307 publications: 39 scientists 308–312 publications: 34 scientists 313–317 publications: 23 scientists 318–322 publications: 18 scientists 323–327 publications: 18 scientists 328–332 publications: 21 scientists 333–337 publications: 20 scientists 338–342 publications: 15 scientists 343–347 publications: 13 scientists 348–352 publications: 24 scientists 353–357 publications: 25 scientists 358–362 publications: 10 scientists 363–367 publications: 20 scientists 368–372 publications: 17 scientists 373–377 publications: 18 scientists 378–382 publications: 15 scientists 383–387 publications: 7 scientists 388–392 publications: 22 scientists 393–397 publications: 9 scientists 398–402 publications: 11 scientists 403–407 publications: 16 scientists 408–412 publications: 4 scientists 413–417 publications: 5 scientists 418–422 publications: 14 scientists 423–427 publications: 8 scientists 428–432 publications: 7 scientists 433–437 publications: 7 scientists 438–442 publications: 10 scientists 443–447 publications: 10 scientists 448–452 publications: 3 scientists 453–457 publications: 9 scientists 458–462 publications: 11 scientists 463–467 publications: 4 scientists 468–472 publications: 6 scientists 473–477 publications: 11 scientists 478–482 publications: 8 scientists 483–487 publications: 2 scientists 488–492 publications: 3 scientists 493–497 publications: 4 scientists 498–502 publications: 4 scientists 503–507 publications: 4 scientists 508–509 publications: 4 scientists 510+ publications: 100 scientists
38 publications 510+

The last bar groups every scientist with 510 publications or more.

Robert P. Speijer D-index placement in Earth Science in 2026

The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where Robert P. Speijer sits on this spectrum.

30 D-Index: 15 scientists 31 D-Index: 42 scientists 32 D-Index: 60 scientists 33 D-Index: 90 scientists 34 D-Index: 103 scientists 35 D-Index: 108 scientists 36 D-Index: 142 scientists 37 D-Index: 147 scientists 38 D-Index: 147 scientists 39 D-Index: 152 scientists 40 D-Index: 143 scientists 41 D-Index: 157 scientists 42 D-Index: 141 scientists 43 D-Index: 151 scientists 44 D-Index: 140 scientists 45 D-Index: 135 scientists 46 D-Index: 121 scientists 47 D-Index: 108 scientists 48 D-Index: 128 scientists 49 D-Index: 111 scientists 50 D-Index: 106 scientists 51 D-Index: 112 scientists 52 D-Index: 102 scientists 53 D-Index: 103 scientists 54 D-Index: 94 scientists 55 D-Index: 61 scientists 56 D-Index: 101 scientists 57 D-Index: 71 scientists 58 D-Index: 65 scientists 59 D-Index: 78 scientists 60 D-Index: 93 scientists 61 D-Index: 56 scientists 62 D-Index: 58 scientists 63 D-Index: 52 scientists 64 D-Index: 63 scientists 65 D-Index: 49 scientists 66 D-Index: 53 scientists 67 D-Index: 57 scientists 68 D-Index: 50 scientists 69 D-Index: 44 scientists 70 D-Index: 44 scientists 71 D-Index: 31 scientists 72 D-Index: 33 scientists 73 D-Index: 33 scientists 74 D-Index: 23 scientists 75 D-Index: 32 scientists 76 D-Index: 24 scientists 77 D-Index: 17 scientists 78 D-Index: 19 scientists 79 D-Index: 9 scientists 80 D-Index: 21 scientists 81 D-Index: 20 scientists 82 D-Index: 17 scientists 83 D-Index: 19 scientists 84 D-Index: 19 scientists 85 D-Index: 14 scientists 86 D-Index: 6 scientists 87 D-Index: 14 scientists 88 D-Index: 17 scientists 89 D-Index: 10 scientists 90 D-Index: 8 scientists 91 D-Index: 8 scientists 92 D-Index: 9 scientists 93 D-Index: 6 scientists 94+ D-Index: 98 scientists
30 D-Index 94+

The last bar groups every scientist with 94 D-Index or more.

Overview

Robert P. Speijer is affiliated with KU Leuven in Belgium and has contributed extensively to the fields of Earth and Planetary Sciences as well as Environmental Science. Their research spans various subfields including Paleontology, Atmospheric Science, Ecology, Oceanography, and Earth-Surface Processes.

Their scholarly output includes significant work on topics such as:

  • Geology and Paleoclimatology Research
  • Evolution and Paleontology Studies
  • Isotope Analysis in Ecology
  • Paleontology and Stratigraphy of Fossils
  • Geological formations and processes
  • Marine Biology and Ecology Research
  • Marine Bivalve and Aquaculture Studies

Recent papers authored or co-authored by Robert P. Speijer are as follows:

  • Surface ocean warming and acidification driven by rapid carbon release precedes Paleocene-Eocene Thermal Maximum, 2022, Science Advances
  • The Giant Marine Gastropod Campanile Giganteum (Lamarck, 1804) as a High-Resolution Archive of Seasonality in the Eocene Greenhouse World, 2020, Geochemistry Geophysics Geosystems
  • A new age model and chemostratigraphic framework for the Maastrichtian type area (southeastern Netherlands, northeastern Belgium), 2022, Newsletters on Stratigraphy
  • Evolution of European carnivorous mammal assemblages through the Palaeogene, 2022, Biological Journal of the Linnean Society
  • Shelf Ecosystems Along the U.S. Atlantic Coastal Plain Prior to and During the Paleocene-Eocene Thermal Maximum: Insights Into the Stratigraphic Architecture, 2022, Paleoceanography and Paleoclimatology

Robert P. Speijer frequently collaborates with several researchers, listing as frequent co-authors:

  • Johan Vellekoop
  • Peter Stassen
  • Philippe Claeys
  • Monika Doubrawa
  • Floréal Solé

The publication record shows appearances in notable venues including:

  • Science Advances
  • Geochemistry Geophysics Geosystems
  • Newsletters on Stratigraphy
  • Biological Journal of the Linnean Society
  • Paleoceanography and Paleoclimatology

Best Publications

  • The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary

    Peter Schulte;Laia Alegret;Ignacio Arenillas;José A. Arz

  • The Paleogene Period

    Noël Vandenberghe;FJ Hilgen;Robert Speijer

  • Late Paleocene early Eocene Tethyan carbonate platform evolution — A response to long- and short-term paleoclimatic change

    C. Scheibner;Robert Speijer

  • 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

    Christopher J Hollis;Tom Dunkley Jones;Eleni Anagnostou;Eleni Anagnostou;Peter K Bijl

  • A benthic foraminiferal record of Paleocene sea level and trophic/redox conditions at Gebel Aweina, Egypt

    Robert P. Speijer;Birger Schmitz

  • The Dababiya Quarry Section: Lithostratigraphy, clay mineralogy, geochemistry and paleontology

    Christian Dupuis;Marie-Pierre Aubry;Etienne Steurbaut;William A. Berggren;William A. Berggren

  • Turnover of larger foraminifera during the Paleocene-Eocene Thermal Maximum and paleoclimatic control on the evolution of platform ecosystems

    C. Scheibner;R.P. Speijer;A.M. Marzouk

  • Sea-level changes and black shales associated with the late Paleocene thermal maximum: Organic-geochemical and micropaleontologic evidence from the southern Tethyan margin (Egypt-Israel)

    Robert P. Speijer;Thomas Wagner

  • High-resolution iridium, δ13C, δ18O, foraminifera and nannofossil profiles across the latest Paleocene benthic extinction event at Zumaya, Spain

    Birger Schmitz;Frank Asaro;Eustoquio Molina;Simonetta Monechi

  • Barium, SiO2 (excess), and P2O5 as proxies of biological productivity in the Middle East during the Palaeocene and the latest Palaeocene benthic extinction event

    Birger Schmitz;Stella D. Charisi;Elisabet I. Thompson;Robert P. Speijer

  • The impact of Paleocene/Eocene boundary events on middle neritic benthic foraminiferal assemblages from Egypt

    R.P. Speijer;G.J. Van Der Zwaan;B. Schmitz

  • Environmental perturbation in the southern Tethys across the Paleocene/Eocene boundary (Dababiya, Egypt): Foraminiferal and clay mineral records

    Sander R. Ernst;Elisa Guasti;Christian Dupuis;Robert P. Speijer

  • The Global Stratotype Sections and Points for the bases of the Selandian (Middle Paleocene) and Thanetian (Upper Paleocene) stages at Zumaia, Spain

    Birger Schmitz;Victoriano Pujalte;Eustoquio Molina;Simonetta Monechi

  • The Paleogene Period

    Unknown

  • The Cretaceous-Paleogene (K-P) boundary at Brazos, Texas: Sequence stratigraphy, depositional events and the Chicxulub impact

    Peter Schulte;Robert Speijer;Hartmut Mai;Agnes Kontny

  • Paleocene sea-level and productivity changes at the southern Tethyan margin (El Kef, Tunisia)

    Elisa Guasti;Tanja J. Kouwenhoven;Henk Brinkhuis;Robert P. Speijer

  • BENTHIC FORAMINIFERAL EXTINCTION AND REPOPULATION IN RESPONSE TO LATEST PALEOCENE TETHYAN ANOXIA

    Robert P. Speijer;Birger Schmitz;Gijsbert J. van der Zwaan

  • Response of marine ecosystems to deep-time global warming: a synthesis of biotic patterns across the Paleocene-Eocene thermal maximum (PETM)

    Robert Speijer;Christian Scheibner;Peter Stassen;Abdel-Mohsen M Morsi

  • Latest Paleocene benthic extinction event on the southern Tethyan shelf (Egypt): Foraminiferal stable isotopic (δ13C, δ18O) records

    B Schmitz;Robert Speijer;MP Aubry

  • Extinction and survivorship of southern Tethyan Benthic foraminifera across the Cretaceous/Palaeogene boundary

    Robert Speijer;GJ van der Zwaan

  • Ostracode turnover and sea-level changes associated with the Paleocene-Eocene thermal maximum

    Robert P. Speijer;Abdel-Mohsen M. Morsi

Frequent Co-Authors

André Bornemann
André Bornemann Federal Institute for Geosciences and Natural Resources
Philippe Claeys
Philippe Claeys Vrije Universiteit Brussel
Ellen Thomas
Ellen Thomas Yale University
Richard D. Norris
Richard D. Norris University of California, San Diego
Jeroen Groeneveld
Jeroen Groeneveld University of Bremen
Kenneth A. Farley
Kenneth A. Farley California Institute of Technology
Birger Schmitz
Birger Schmitz Lund University
Henk Brinkhuis
Henk Brinkhuis Utrecht University
Veerle Cnudde
Veerle Cnudde Utrecht University
Appy Sluijs
Appy Sluijs Utrecht University

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