Concepedia

Rolf Ludvigsen

RL

Statistics

Publications

22

Citations

690

H-Index

15

Active since

1972

Affiliations

University of Toronto(Current)

University of Alberta

Rolf Ludvigsen is an author at University of Toronto specializing in evolutionary biology, natural sciences, and biology.

Top concepts

Evolutionary BiologyBiologyNatural SciencesEngineeringGeologyGeochronologyPhylogeneticsBiogeographyPaleoecologyEarth Science

Publications per year

1972–2006

22

Publications

22

Three new Upper Cambrian stages for North America

Rolf Ludvigsen, Stephen R. Westrop · Geology · 1985 · 103 citations

Engineering, New Upper Cambrian, Structural Geology +12

Trilobite biofacies of the Cambrian-Ordovician boundary interval in northern North America

Rolf Ludvigsen, Stephen R. Westrop · Alcheringa An Australasian Journal of Palaeontology · 1983 · 66 citations

Engineering, Precambrian Geology, Cluster Analysis +16

Biogeographic control of trilobite mass extinction at an Upper Cambrian “biomere” boundary

Stephen R. Westrop, Rolf Ludvigsen · Paleobiology · 1987 · 60 citations

Engineering, Selective Survival, Paleoceanography +16

Upper Steptoean (Upper Cambrian) Trilobites from the Mckay Group of Southeastern British Columbia, Canada

Brian D. E. Chatterton, Rolf Ludvigsen · Journal of Paleontology · 1998 · 55 citations

Biology, Paleoenvironmental Reconstruction, Upper Steptoean +10

Marjuman (Cambrian) agnostoid trilobites of the Cow Head Group, western Newfoundland

Stephen R. Westrop, Rolf Ludvigsen, C.H. Kindle · Journal of Paleontology · 1996 · 43 citations

Biology, Western Newfoundland, Paleoenvironmental Reconstruction +10

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