Christian Mac Ørum Rasmussen

Christian Mac Ørum Rasmussen

Special Consultant

  • Section for Geobiology

    Øster Voldgade 5-7

    1350 København K

    Phone: +45 35 32 23 57
ORCID: 0000-0003-2982-9931

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  1. Published

    Virgiana Billings, 1857: on top of the world after 150 years

    Rasmussen, Christian Mac Ørum & Harper, D. A. T., 2008, In: Palaeontology Newsletter. 66, p. 52 1 p.

    Research output: Contribution to journal › Conference abstract in journal › Research

  2. Published

    Depth - related brachiopod bioevents in the Middle Ordovician (Kundan) of Baltica

    Rasmussen, Christian Mac Ørum & Harper, D. A. T., 2007, Programme with Abstracts: IGCP 503 Annual Meeting. Owen, A. (ed.). University of Glasgow, p. 40 1 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  3. Published

    Survival of the thickest: Late Ordovician - Early Silurian brachiopods from Peary Land, North Greenland

    Rasmussen, Christian Mac Ørum, Harper, D. A. T., Jin, J., Rasmussen, Jan Audun Liljeroth & Stouge, Svend, 2007, Lundadagarna i Historisk geologi och paleontologi: Abstracts with programme. Terfelt, F. & Axheimer, N. (eds.). Lund University Press, p. 35 1 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  4. Published

    A Baltic Perspective on the Early to Early Late Ordovician δ13C and δ18O Records and Its Paleoenvironmental Significance

    Edward, O., Korte, Christoph, Ullmann, C. V., Colmenar, J., Thibault, Nicolas Rudolph, Bagnoli, G., Stouge, Svend & Rasmussen, Christian Mac Ørum, Mar 2022, In: Paleoceanography and Paleoclimatology. 37, 3, 26 p., e2021PA004309.

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. Published

    A multidisciplinary perspective on the Great Ordovician Biodiversification Event and the development of the early Paleozoic world

    Stigall, A. L., Freeman, R. L., Edwards, C. T. & Rasmussen, Christian Mac Ørum, 2020, In: Palaeogeography, Palaeoclimatology, Palaeoecology - An International Journal for the Geo-Sciences. 543, 8 p., 109521.

    Research output: Contribution to journal › Editorial › Research › peer-review

  6. Published

    A sequence of temporally separated element peaks; the fingerprint of a biogeochemical event initiated by sedimentary exhalative (SEDEX) brine expulsion

    Arts, M., Cramer, B., Calner, M., Rasmussen, Christian Mac Ørum, Bancroft, A., Oborny, S., Hartke, E., Biebesheimer, E. & Silva, A. D., 4 Mar 2021

    Research output: Other contribution › Research

  7. Published

    A synopsis of Late Ordovician brachiopod diversity in the Anti-Atlas, Morocco

    Colmenar Lallena, J., Villas, E. & Rasmussen, Christian Mac Ørum, 2022, The Great Ordovician Biodiversification Event: Insights from the Tafilalt Biota, Morocco. 1 ed. London: Geological Society of London, Vol. 485. p. 153-163 (Geological Society Special Publication; No. 1, Vol. 485).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  8. Published

    A temporal framework for the Mid–early Late Ordovician of Baltica

    Rasmussen, Christian Mac Ørum, Thibault, Nicolas Rudolph, Stouge, Svend, Calner, M., Rasmussen, Jan Audun Liljeroth, Lindskog, A., Bauert, H., Sinnesael, M., Edward, O., Bagnoli, G., Siggaard-Andersen, Marie-Louise, Wu, R., Bauert, G., Ullmann, C. V., Korte, Christoph, Schovsbo, N. & Nielsen, Arne Thorshøj, 2021, In: Journal de l’Association Paléontologique Française. 2021, Numéro Spécial 2, p. 66

    Research output: Contribution to journal › Conference abstract in journal › Research

  9. Published

    An atypical Late Ordovician Red River brachiopod fauna from eastern North Greenland: eastward, offshore migration of the Hiscobeccus-fauna

    Rasmussen, Christian Mac Ørum & Harper, D. A. T., 2010, Programme and Abstracts, The Palaecontological Association, 54th Annual Meeting 17th-20th December 2010, Ghent University. The Palaeontological Association, p. 68 1 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  10. Published

    An imprint of astronomical climate forcing in the Baltoscandian Middle Ordovician ‘orthoceratite limestone’?

    Rasmussen, Christian Mac Ørum, Sinnesael, M., Thibault, Nicolas Rudolph, Stouge, Svend, Siggaard-Andersen, Marie-Louise & Schovsbo, N., 2019, In: Geophysical Research Abstracts. 21, 14038, 1 p.

    Research output: Contribution to journal › Conference abstract in journal › Research

  11. Published

    Baltica: a mid Ordovician diversity hotspot

    Rasmussen, Christian Mac Ørum, Hansen, J. & Harper, D. A. T., 2007, In: Historical Biology. 19, 3, p. 255-261 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. Published

    Biodiversity, biogeography and phylogeography of Ordovician rhynchonelliform brachiopods

    Harper, D. A. T., Rasmussen, Christian Mac Ørum, Liljeroth, M., Blodgett, R. B., Candela, Y., Jin, J., Percival, I. G., Rong, J. Y., Villas, E. & Zhan, R. B., 2013, Early palaeozoic biogeography and palaeogeography. Harper, D. A. T. & Servais, T. (eds.). Geological Society, p. 127-144 18 p. (Geological Society of London. Memoirs; No. 38).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  13. Published

    Biogeographic and bathymetric determinants of brachiopod extinction and survival during the Late Ordovician mass extinction

    Finnegan, S., Rasmussen, Christian Mac Ørum & Harper, D. A. T., 2016, In: Proceedings of the Royal Society B: Biological Sciences. 283, 1829, 9 p., 20160007.

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    Building mountain biodiversity: geological and evolutionary processes

    Rahbek, Carsten, Borregaard, Michael Krabbe, Antonelli, A., K. Colwell, R., Holt, B. G., Nogues, David Bravo, Rasmussen, Christian Mac Ørum, Richardson, Katherine, Rosing, Minik Thorleif, Whittaker, R. J. & Fjeldså, Jon, 2019, In: Science. 365, 6458, p. 1114-1119 6 p.

    Research output: Contribution to journal › Review › Research › peer-review

  15. Published

    Carbon isotope chemostratigraphy and sea-level history of the Hirnantian Stage (uppermost Ordovician) in the Oslo-Asker district, Norway

    Calner, M., Bockelie, J. F., Rasmussen, Christian Mac Ørum, Calner, H., Lehnert, O. & Joachimski, M. M., 2021, In: Geological Magazine. 58, 11, p. 1977-2008 32 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. Published

    Cascading trend of Early Paleozoic marine radiations paused by Late Ordovician extinctions

    Rasmussen, Christian Mac Ørum, Kroger, B., Nielsen, Morten Lunde & Colmenar, J., 9 Apr 2019, In: Proceedings of the National Academy of Sciences of the United States of America. 116, 15, p. 7207-7213 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  17. Published

    Coordinated biotic and abiotic change during the Great Ordovician Biodiversification Event: Darriwilian assembly of early Paleozoic building blocks

    Stigall, A. L., Edwards, C. T., Freeman, R. L. & Rasmussen, Christian Mac Ørum, 15 Sep 2019, In: Palaeogeography, Palaeoclimatology, Palaeoecology - An International Journal for the Geo-Sciences. 530, p. 249-270 22 p.

    Research output: Contribution to journal › Review › Research › peer-review

  18. Published

    Correction to ‘The evolutionary dynamics of the Early Palaeozoic marine biodiversity accumulation’

    Kröger, B., Franeck, F. & Rasmussen, Christian Mac Ørum, 4 Dec 2019, In: Proceedings of the Royal Society B: Biological Sciences. 286, 1916, 3 p., 20192358.

    Research output: Contribution to journal › Journal article › Research › peer-review

  19. Published

    Cyclo and chemostratigraphic characteristics of the Middle Silurian in Gotland, Sweden

    Arts, M., Cramer, B., Calner, M., Rasmussen, Christian Mac Ørum, Bancroft, A., Oborny, S., Hartke, E., Biebesheimer, E. & Silva, A. D., 2020. 1 p.

    Research output: Contribution to conference › Poster › Research

  20. Published

    Diachronism in the Ordovician brachiopod diversification: Extrinsic and intrinsic factors

    Harper, D. A. T. & Rasmussen, Christian Mac Ørum, 2007, Lundadagarna i Historisk geologi och paleontologi: Abstracts with programme. Terfelt, F. & Axheimer, N. (eds.). Lund University Press, p. 23 1 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  21. Published

    Did the amalgamation of continents drive the end Ordovician mass extinctions?

    Rasmussen, Christian Mac Ørum & Harper, D. A. T., 2011, In: Palaeogeography, Palaeoclimatology, Palaeoecology - An International Journal for the Geo-Sciences. 311, 1-2, p. 48-62 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  22. Published

    Early Mid Ordovician (Kundan) brachiopods from the Eastern Baltic: biostratigraphy, palaeogeography and palaeoecology

    Rasmussen, Christian Mac Ørum & Harper, D. A. T., 2004, Palaeontological Association Newsletter. 57 ed. Frankrig, p. 176

    Research output: Chapter in Book/Report/Conference proceeding › Preface/postscript › Research

  23. Published

    Ecostratigraphical interpretation of lower Middle Ordovician East Baltic sections based on brachiopods

    Rasmussen, Christian Mac Ørum, Nielsen, Arne Thorshøj & Harper, D. A. T., 2009, In: Geological Magazine. 146, p. 717-731 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Published

    Ecostratigraphical interpretation of the lower Middle Ordovician (Kundan) argillaceous limestones from the Eastern Baltic based on brachiopods.

    Rasmussen, Christian Mac Ørum, Harper, D. A. T. & Nielsen, Arne Thorshøj, 2005, In: Palaeontology Newsletter. 60, p. 54

    Research output: Contribution to journal › Journal article › Research › peer-review

  25. Published

    End Ordovician extinctions: a coincidence of causes

    Harper, D. A. T., Hammarlund, E. U. & Rasmussen, Christian Mac Ørum, 2014, In: Gondwana Research. 25, 4, p. 1294-1307 14 p.

    Research output: Contribution to journal › Review › Research › peer-review

  26. Published

    Final destination, first discovered: the tale of Oanduporella Hints, 1975

    Rasmussen, Christian Mac Ørum, May 2011, Ordovician of the World. Gutiérrez-Marco, J. C., Rábano, I. & García-Bellido, D. (eds.). Instituto Geológico y Minero de España, p. 447-455 9 p. (Publicaciones del Instituto Geológico y Minero de España. Serie: Cuadernos del Museo Geominero; No. 14).

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  27. Published

    Gamma-ray log correlation and stratigraphic architecture of the Cambro-Ordovician Alum Shale Formation on Bornholm, Denmark: Evidence for differential syndepositional isostasy

    Nielsen, Arne Thorshøj, Schovsbo, N. H., Klitten, K., Woollhead, D. & Rasmussen, Christian Mac Ørum, 2018, In: Bulletin of the Geological Society of Denmark. 66, p. 237-273 18 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  28. Published

    Identifying the most surprising victims of mass extinction events: an example using Late Ordovician brachiopods

    Finnegan, S., Rasmussen, Christian Mac Ørum & Harper, D. A. T., Sep 2017, In: Biology Letters. 13, 9, 5 p., 20170400.

    Research output: Contribution to journal › Letter › Research › peer-review

  29. Published

    Integrating bed-by-bed palaeobiological and geochemical proxies through the onset of the Great Ordovician Biodiversification Event on Baltica

    Rasmussen, Christian Mac Ørum, Ullmann, C. V., Jakobsen, K. G., Lindskog, A., Hansen, J., Hansen, T., Eriksson, M. E., Dronov, A., Frei, Robert, Korte, Christoph, Nielsen, Arne Thorshøj & Harper, D. A. T., 2014, p. 81.

    Research output: Contribution to conference › Conference abstract for conference › Research

  30. Published

    Interrogation of distributional data for the End Ordovician crisis interval: where did disaster strike?

    Rasmussen, Christian Mac Ørum & Harper, D. A. T., 2011, In: Geological Journal. 46, 5, p. 478-500 23 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  31. Published

    Kundan (early Mid Ordovician) brachiopods from the Baltic: biostratigraphy and ecostratigraphy.

    Rasmussen, Christian Mac Ørum & Harper, D. A. T., 2005, In: GFF. 127, p. 54 1 p.

    Research output: Contribution to journal › Journal article › Research

  32. Published

    Late Ordovician and early Silurian virgianid and stricklandioid brachiopods from North Greenland: implications for a warm-water faunal province

    Jin, J., Rasmussen, Christian Mac Ørum, Sheehan, P. M. & Harper, D. A. T., 2024, In: Papers in Palaeontology. 10, 1, 42 p., e1544.

    Research output: Contribution to journal › Journal article › Research › peer-review

  33. Published

    Late Ordovician brachiopods from West-central Alaska: systematics, ecology and palaeobiogeography

    Rasmussen, Christian Mac Ørum, Harper, D. A. T. & Blodgett, R. B., 2012, Wiley-Blackwell. 103 p. (Fossils and Strata, Vol. 58).

    Research output: Book/Report › Book › Research › peer-review

  34. Published

    Late Ordovician brachiopods from eastern North Greenland: equatorial offshore migration of the Red River fauna

    Rasmussen, Christian Mac Ørum, Mar 2013, In: Palaeontology. 56, 2, p. 359-379 21 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  35. Late Ordovician carbonate mounds from North Greenland: a peri-Laurentian dimension to the Boda Event?

    Harper, D. A. T., Jin, J. & Rasmussen, Christian Mac Ørum, 2014, In: GFF. 136, 1, p. 95-99 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  36. Published

    Middle Ordovician astrochronology decouples asteroid breakup from glacially-induced biotic radiations

    Rasmussen, Jan Audun Liljeroth, Thibault, Nicolas Rudolph & Rasmussen, Christian Mac Ørum, Dec 2021, In: Nature Communications. 12, 1, 14 p., 6430.

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. Published

    Middle Ordovician carbonate facies development, conodont biostratigraphy and faunal diversity patterns at the Lynna River, northwestern Russia

    Lindskog, A., Eriksson, M. E., Rasmussen, J. A., Dronov, A. & Rasmussen, Christian Mac Ørum, 2020, In: Estonian Journal of Earth Sciences. 69, 1, p. 37-61

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. Published

    Occurrence of the Late Ordovician Red River lithofacies and biofacies in North Greenland.

    Jin, J., Harper, D. A. T., Rasmussen, Jan Audun Liljeroth, Rasmussen, Christian Mac Ørum & Stouge, Svend, 2008, In: Canadian Paleontology Conference Proceedings. 6, p. 18-21 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  39. Published

    Onset of main Phanerozoic marine radiation sparked by emerging Mid Ordovician icehouse

    Rasmussen, Christian Mac Ørum, Ullmann, C. V., Jakobsen, K. G., Lindskog, A., Hansen, J., Hansen, T., Eriksson, M. E., Dronov, A., Frei, Robert, Korte, Christoph, Nielsen, Arne Thorshøj & Harper, D. A. T., 2016, In: Scientific Reports. 6, 9 p., 18884.

    Research output: Contribution to journal › Journal article › Research › peer-review

  40. Published

    Overview of the pentameride brachiopod succession (upper Ordovician – lower Silurian) in Børglum Elv and G.B. Schley Fjord, Peary Land, North Greenland

    Harper, D. A. T., Jin, J., Rasmussen, Christian Mac Ørum, Rasmussen, Jan Audun Liljeroth & Stouge, Svend, 2007, Acta Palaeontologica Sinica. Nanjing, Vol. 46 supplement. p. 176 – 180 5 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  41. Phylogeography of Ordovician-Silurian rhynchonelliformean brachiopods: tracking higher order distributional patterns, radiations and extinctions in 4D

    Rasmussen, Christian Mac Ørum, 2014, In: GFF. 136, 1, p. 223-228 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  42. Published

    Precisely locating the Ordovician equator in Laurentia

    Jin, J., Harper, D. A. T., Cocks, L. R. M., McCausland, P. J. A., Rasmussen, Christian Mac Ørum & Sheehan, P. M., Feb 2013, In: Geology. 41, 2, p. 107-110 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  43. Published

    Reclaiming the tropical shores of Laurentia: the early Silurian pentameroid (r)evolution

    Rasmussen, Christian Mac Ørum, Sep 2011, In: G F F. 133, 1-2, p. 70-71 2 p.

    Research output: Contribution to journal › Conference abstract in journal › Research › peer-review

  44. Published

    Refined Ordovician timescale reveals no link between asteroid breakup and biodiversification

    Lindskog, A., Canas Portela Costa, M. M., Rasmussen, Christian Mac Ørum, Connelly, James & Eriksson, M. E., 24 Jan 2017, In: Nature Communications. 8, 8 p., 14066.

    Research output: Contribution to journal › Journal article › Research › peer-review

  45. Published

    Resolving early Mid-Ordovician (Kundan) bioevents in the East Baltic based on brachiopods

    Rasmussen, Christian Mac Ørum & Harper, D. A. T., 2008, In: Geobios. 41, 4, p. 533-542

    Research output: Contribution to journal › Journal article › Research › peer-review

  46. Published

    So where did they go? Brachiopod refuges during the End Ordovician crisis interval

    Rasmussen, Christian Mac Ørum & Harper, D. A. T., 2009, Ikke angivet. Harper, D. A. T. & McCorry, M. (eds.). Museum Tusculanum, p. 15 1 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  47. Published

    Special Issue: Across the Great Ordovician Biodiversification Event (GOBE): Advances in understanding the co-evolution Earth-life system from the late Cambrian through the Katian

    Stigall, A., Edwards, C. T., Freeman, R. L. & Rasmussen, Christian Mac Ørum, 2019, Elsevier.

    Research output: Other contribution › Research

  48. Published

    Stable ocean redox during the main phase of the Great Ordovician Biodiversification Event

    del Rey, Álvaro, Rasmussen, Christian Mac Ørum, Calner, M., Wu, R., Asael, D. & Dahl, Tais Wittchen, 2022, In: Communications Earth & Environment. 3, 7 p., 220.

    Research output: Contribution to journal › Journal article › Research › peer-review

  49. Published

    Subaerial speleothems and deep karst in central Sweden linked to Hirnantian glaciations

    Kröger, B., Ebbestad, J. O. R., Lehnert, O., Ullmann, C. V., Korte, Christoph, Frei, Robert & Rasmussen, Christian Mac Ørum, 2015, In: Journal of the Geological Society - London. 172, 3, p. 349-356 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  50. Published

    Sulcipentamerus (Pentamerida, Brachiopoda) from the Lower Silurian Washington Land Group, North Greenland

    Jin, J., Harper, D. A. T. & Rasmussen, Christian Mac Ørum, 2009, In: Palaeontology. 52, p. 385-399 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

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