Jaap Klein

424 total citations
9 papers, 302 citations indexed

About

Jaap Klein is a scholar working on Paleontology, Atmospheric Science and Oceanography. According to data from OpenAlex, Jaap Klein has authored 9 papers receiving a total of 302 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Paleontology, 5 papers in Atmospheric Science and 2 papers in Oceanography. Recurrent topics in Jaap Klein's work include Paleontology and Stratigraphy of Fossils (6 papers), Geology and Paleoclimatology Research (5 papers) and Evolution and Paleontology Studies (3 papers). Jaap Klein is often cited by papers focused on Paleontology and Stratigraphy of Fossils (6 papers), Geology and Paleoclimatology Research (5 papers) and Evolution and Paleontology Studies (3 papers). Jaap Klein collaborates with scholars based in Spain, France and Austria. Jaap Klein's co-authors include Zdeněk Vašíček, Ricardo Barragán, Stéphane Reboulet, Alexander Lukeneder, Philip J. Hoedemaeker, Izabela Ploch, Ottilia Szives, Seyed Naser Raisossadat, Jean Vermeulen and P. Ropolo and has published in prestigious journals such as Cretaceous Research, Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen and Annales Societatis Geologorum Poloniae/Rocznik Polskiego Towarzystwa Geologicznego.

In The Last Decade

Jaap Klein

9 papers receiving 279 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Jaap Klein Spain 5 268 193 110 46 43 9 302
Seyed Naser Raisossadat Iran 6 324 1.2× 220 1.1× 119 1.1× 55 1.2× 48 1.1× 8 369
Antoine Pictet Switzerland 10 300 1.1× 204 1.1× 101 0.9× 80 1.7× 46 1.1× 26 334
Fumihisa Kawabe Japan 7 269 1.0× 183 0.9× 96 0.9× 39 0.8× 74 1.7× 13 338
Koorosh Rashidi Iran 11 293 1.1× 147 0.8× 76 0.7× 39 0.8× 82 1.9× 53 329
Carmen Arias Spain 11 336 1.3× 242 1.3× 167 1.5× 43 0.9× 50 1.2× 27 396
Celestina González‐Arreola Mexico 9 288 1.1× 186 1.0× 102 0.9× 43 0.9× 52 1.2× 19 330
Ottilia Szives Hungary 9 375 1.4× 244 1.3× 156 1.4× 59 1.3× 67 1.6× 20 410
Marin Ivanov Bulgaria 9 249 0.9× 173 0.9× 100 0.9× 53 1.2× 56 1.3× 28 301
Shannon J. Haynes United States 9 166 0.6× 134 0.7× 170 1.5× 28 0.6× 44 1.0× 20 346
Blanca A. Toro Argentina 13 386 1.4× 194 1.0× 120 1.1× 61 1.3× 70 1.6× 42 438

Countries citing papers authored by Jaap Klein

Since Specialization
Citations

This map shows the geographic impact of Jaap Klein's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Jaap Klein with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Jaap Klein more than expected).

Fields of papers citing papers by Jaap Klein

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Jaap Klein. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Jaap Klein. The network helps show where Jaap Klein may publish in the future.

Co-authorship network of co-authors of Jaap Klein

This figure shows the co-authorship network connecting the top 25 collaborators of Jaap Klein. A scholar is included among the top collaborators of Jaap Klein based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Jaap Klein. Jaap Klein is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

9 of 9 papers shown
1.
Reboulet, Stéphane, Ottilia Szives, Beatriz Aguirre‐Urreta, et al.. (2018). Report on the 6th International Meeting of the IUGS Lower Cretaceous Ammonite Working Group, the Kilian Group (Vienna, Austria, 20th August 2017). Cretaceous Research. 91. 100–110. 100 indexed citations
2.
Janssen, Nico, et al.. (2016). The chronostratigraphical record of Didayilamellaptychus (Lamellaptychi, Ammonitina). Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 280(1). 37–48. 1 indexed citations
3.
Vašíček, Zdeněk, Jaap Klein, & Nico Janssen. (2016). Ontogeny and variability in ribbing of Late Valanginian lamellaptychi (Ammonitina). Annales Societatis Geologorum Poloniae/Rocznik Polskiego Towarzystwa Geologicznego. 1 indexed citations
4.
Vašíček, Zdeněk, Nico Janssen, & Jaap Klein. (2016). Aptychi from the Berriasian/Valanginian (France and Spain): new stratigraphical and morphological details. Annales Societatis Geologorum Poloniae/Rocznik Polskiego Towarzystwa Geologicznego. 1 indexed citations
5.
Reboulet, Stéphane, Jaap Klein, Ricardo Barragán, et al.. (2008). Report on the 3rd International Meeting of the IUGS Lower Cretaceous Ammonite Working Group, the “Kilian Group” (Vienna, Austria, 15th April 2008). Cretaceous Research. 30(2). 496–502. 56 indexed citations
6.
Hoedemaeker, Philip J., Stéphane Reboulet, M. Beatriz Aguirre‐Urreta, et al.. (2003). Report on the 1st International Workshop of the IUGS Lower Cretaceous Ammonite Working Group, the ‘Kilian Group’ (Lyon, 11 July 2002). Cretaceous Research. 24(1). 89–94. 107 indexed citations
7.
Klein, Jaap & Philip J. Hoedemaeker. (1999). Ammonite stratigraphy of the Valanginian to Barremian for the Mediterranean region. Data Archiving and Networked Services (DANS). 3(6). 97–127. 13 indexed citations
8.
Rawson, Peter F., Ph. J. Hoedemaeker, M. Beatriz Aguirre‐Urreta, et al.. (1999). Report on the 4th International Workshop of the Lower Cretaceous Cephalopod Team (IGCP-Project 362). The Digital Academic Repository of Naturalis Biodiversity Center (Naturalis Biodiversity Center). 3(1). 3–13. 22 indexed citations
9.
Klein, Jaap, et al.. (1997). Analyse cytogénétique comparée de trois taxons du genre "Hyoseris" L. Lagascalia. 19(1). 529–536. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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