Rolf Ludvigsen

988 total citations
37 papers, 780 citations indexed

About

Rolf Ludvigsen is a scholar working on Paleontology, Oceanography and Atmospheric Science. According to data from OpenAlex, Rolf Ludvigsen has authored 37 papers receiving a total of 780 indexed citations (citations by other indexed papers that have themselves been cited), including 31 papers in Paleontology, 16 papers in Oceanography and 15 papers in Atmospheric Science. Recurrent topics in Rolf Ludvigsen's work include Paleontology and Stratigraphy of Fossils (31 papers), Geology and Paleoclimatology Research (15 papers) and Marine Biology and Ecology Research (15 papers). Rolf Ludvigsen is often cited by papers focused on Paleontology and Stratigraphy of Fossils (31 papers), Geology and Paleoclimatology Research (15 papers) and Marine Biology and Ecology Research (15 papers). Rolf Ludvigsen collaborates with scholars based in Canada, United States and Japan. Rolf Ludvigsen's co-authors include Stephen R. Westrop, Brian D. E. Chatterton, Brian R. Pratt, Ed Landing, R. P. Tripp, Peter H. von Bitter, JOHN AITKEN, W H Fritz, Andrew Simpson and Nigel C. Hughes and has published in prestigious journals such as Geology, Paleobiology and Eos.

In The Last Decade

Rolf Ludvigsen

37 papers receiving 707 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Rolf Ludvigsen Canada	18	721	342	269	143	104	37	780
A. T. Thomas United Kingdom	14	479 0.7×	312 0.9×	159 0.6×	104 0.7×	85 0.8×	36	638
R. M. Owens United Kingdom	11	480 0.7×	246 0.7×	191 0.7×	102 0.7×	91 0.9×	25	584
Valdar Jaanusson Sweden	15	599 0.8×	304 0.9×	184 0.7×	102 0.7×	107 1.0×	29	748
Frederick A. Sundberg United States	19	776 1.1×	381 1.1×	151 0.6×	171 1.2×	128 1.2×	57	885
Hans Hagdorn United States	19	702 1.0×	183 0.5×	283 1.1×	77 0.5×	66 0.6×	63	839
Beatriz G. Waisfeld Argentina	19	905 1.3×	483 1.4×	337 1.3×	168 1.2×	42 0.4×	69	1.0k
Jih‐Pai Lin China	19	760 1.1×	320 0.9×	297 1.1×	132 0.9×	128 1.2×	63	879
John R. Laurie Australia	18	799 1.1×	302 0.9×	262 1.0×	163 1.1×	258 2.5×	64	944
Darwin R. Boardman United States	13	447 0.6×	269 0.8×	91 0.3×	150 1.0×	86 0.8×	30	602
Reuben James Ross United States	15	421 0.6×	249 0.7×	182 0.7×	111 0.8×	89 0.9×	31	555

Countries citing papers authored by Rolf Ludvigsen

Since Specialization

Citations

This map shows the geographic impact of Rolf Ludvigsen'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 Rolf Ludvigsen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Rolf Ludvigsen more than expected).

Fields of papers citing papers by Rolf Ludvigsen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Rolf Ludvigsen. 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 Rolf Ludvigsen. The network helps show where Rolf Ludvigsen may publish in the future.

Co-authorship network of co-authors of Rolf Ludvigsen

This figure shows the co-authorship network connecting the top 25 collaborators of Rolf Ludvigsen. A scholar is included among the top collaborators of Rolf Ludvigsen 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 Rolf Ludvigsen. Rolf Ludvigsen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Pratt, Brian R. & Rolf Ludvigsen. (2006). Early Silurian Trilobites of Anticosti Island, Québec, Canada. Geoscience Canada. 33(1). 19 indexed citations

Westrop, Stephen R. & Rolf Ludvigsen. (2000). THE LATE CAMBRIAN (MARJUMAN) TRILOBITE GENUSHYSTEROPLEURARAYMOND FROM THE COW HEAD GROUP, WESTERN NEWFOUNDLAND. Journal of Paleontology. 74(6). 1020–1030. 6 indexed citations

Chatterton, Brian D. E. & Rolf Ludvigsen. (1998). Upper Steptoean (Upper Cambrian) Trilobites from the Mckay Group of Southeastern British Columbia, Canada. Journal of Paleontology. 72(S49). 1–43. 47 indexed citations

Fritz, W H, et al.. (1990). The Burgess Shale: Not in the Shadow of the Cathedral Escarpment. Geoscience Canada. 17(2). 19 indexed citations

Ludvigsen, Rolf & R. P. Tripp. (1990). Silurian trilobites from the northern Yukon Territory. Biodiversity Heritage Library (Smithsonian Institution). 18 indexed citations

Westrop, Stephen R. & Rolf Ludvigsen. (1987). Biogeographic control of trilobite mass extinction at an Upper Cambrian “biomere” boundary. Paleobiology. 13(1). 84–99. 52 indexed citations

Ludvigsen, Rolf, et al.. (1986). PALEOSCENE #3. Dual Biostratigraphy: Zones and biofacies. Geoscience Canada. 13(3). 25 indexed citations

Ludvigsen, Rolf. (1986). Revision of Acheilus and Theodenisia (Late Cambrian, Trilobita). Journal of Paleontology. 60(1). 61–67. 3 indexed citations

Ludvigsen, Rolf & Stephen R. Westrop. (1985). Three new Upper Cambrian stages for North America. Geology. 13(2). 139–139. 86 indexed citations

10.

Ludvigsen, Rolf & Stephen R. Westrop. (1985). Comments and Replies on “Three new Upper Cambrian stages for North America”. Geology. 13(9). 665–665. 2 indexed citations

11.

Ludvigsen, Rolf & Stephen R. Westrop. (1983). Trilobite biofacies of the Cambrian-Ordovician boundary interval in northern North America. Alcheringa An Australasian Journal of Palaeontology. 7(4). 301–319. 58 indexed citations

12.

Ludvigsen, Rolf. (1982). Upper Cambrian and Lower Ordovician trilobite biostratigraphy of the Rabbitkettle Formation, Western District of Mackenzie. Biodiversity Heritage Library (Smithsonian Institution). 71 indexed citations

13.

Ludvigsen, Rolf & Brian D. E. Chatterton. (1982). Ordovician Pterygometopidae (Trilobita) of North America. Canadian Journal of Earth Sciences. 19(11). 2179–2206. 18 indexed citations

14.

Ludvigsen, Rolf & Brian D. E. Chatterton. (1980). The ontogeny of Failleana and the origin of the Bumastinae (Trilobita). Geological Magazine. 117(5). 471–478. 10 indexed citations

15.

Ludvigsen, Rolf. (1979). The Ordovician trilobite Pseudogygites Kobayashi in eastern and Arctic North America. Biodiversity Heritage Library (Smithsonian Institution). 28 indexed citations

16.

Ludvigsen, Rolf. (1978). The trilobites Bathyurus and Eomonorachus from the Middle Ordovician of Oklahoma and their biofacies significance. Biodiversity Heritage Library (Smithsonian Institution). 9 indexed citations

17.

Ludvigsen, Rolf. (1977). The Ordovician trilobite Ceraurinus Barton in North America. Journal of Paleontology. 51(5). 959–972. 13 indexed citations

18.

Ludvigsen, Rolf. (1977). Rapid repair of traumatic injury by an Ordovician trilobite. Lethaia. 10(3). 205–207. 22 indexed citations

19.

Ludvigsen, Rolf. (1975). Ordovician Formations and Faunas, Southern Mackenzie Mountains. Canadian Journal of Earth Sciences. 12(4). 663–697. 27 indexed citations

20.

Ludvigsen, Rolf. (1972). Late Early Devonian Dacryoconarid Tentaculites, Northern Yukon Territory. Canadian Journal of Earth Sciences. 9(3). 297–318. 9 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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