Chapter 19 Global Cambrian trilobite palaeobiogeography assessed using parsimony analysis of endemicity

Author:

Álvaro J. Javier1,Ahlberg Per23,Babcock Loren E.3,Bordonaro Osvaldo L.4,Choi Duck K.5,Cooper Roger A.6,Ergaliev Gappar KH.7,Gapp I. Wesley8,Pour Mansoureh Ghobadi9,Hughes Nigel C.10,Jago James B.11,Korovnikov Igor12,Laurie John R.13,Lieberman Bruce S.8,Paterson John R.14,Pegel Tatyana V.15,Popov Leonid E.16,Rushton Adrian W. A.17,Sukhov Sergei S.15,Tortello M. Franco18,Zhou Zhiyi19,Żylińska Anna20

Affiliation:

1. Centro de Astrobiología (INTA/CSIC), Ctra de Torrejón a Ajalvir, km 4, 28850 Torrejón de Ardoz, Spain

2. Department of Earth and Ecosystem Sciences, GeoBiosphere Science Centre, Lund University, Sölvegatan 12, 223 62 Lund, Sweden

3. School of Earth Sciences, The Ohio State University, Columbus, OH 43210, USA

4. IANIGLA-CONICET, c.c. 131, 5500 Mendoza, Argentina

5. School of Earth and Environmental Sciences, Seoul National University, Seoul 151-747, Korea

6. GNS Science - Te Pu Ao, 1 Fairway Drive, Avalon, PO Box 30368, Lower Hutt, New Zealand

7. Institute of Geological Sciences, National Academy of Sciences, ul. Kabanbai Batyr 69a, 480100 Almaty, Republic of Kazakhstan

8. Department of Geology and Natural History Museum/Biodiversity Research Center, University of Kansas, 1475 Jayhawk Blvd., 120 Lindley Hall, Lawrence, KS 66045, USA

9. Department of Geology, Faculty of Sciences, Golestan University, Gorgan 49138-15739, Iran

10. Department of Earth Sciences, University of California, Riverside, CA 92521, USA

11. School of Natural and Built Environments, University of South Australia, Mawson Lakes, SA 5095, Australia

12. Institute of Petroleum Geology and Geophysics, Siberian Branch of Russian Academy of Sciences, Academician Koptyug Avenue, 3, 630090 Novosibirsk, Russia

13. Petroleum and Marine Division, Geoscience Australia, GPO Box 378, Canberra ACT 2601, Australia

14. Division of Earth Sciences, School of Environmental & Rural Science, University of New England, Armidale, NSW 2351, Australia

15. Siberian Research Institute of Geology, Geophysics and Mineral Resources (SNIIGGiMS), Krasnyj Ave 67, 630091 Novosibirsk, Russia

16. Department of Geology, National Museum of Wales, Cardiff, Cathays Park, Cardiff CF10 3NP, UK

17. Palaeontological Department, The Natural History Museum, London SW7 5BD, UK

18. División Paleontología Invertebrados, Museo de Ciencias Naturales, Paseo del Bosque s/n, 1900 La Plata, Argentina

19. Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 21008, China

20. Faculty of Geology, University of Warsaw, Żwirki i Wigury Str. 93, 02-089 Warszawa, Poland

Abstract

AbstractPalaeobiogeographical data on Cambrian trilobites obtained during the twentieth century are combined in this paper to evaluate palaeoceanographic links throughc.30 myr, once these arthropods biomineralized. Worldwide major tectonostratigraphic units are characterized at series intervals of Cambrian time and datasets of trilobite genera (629 for Cambrian Series 2, 965 for Cambrian Series 3, and 866 for the Furongian Series) are analysed using parsimony analysis of endemicity. Special attention is given to the biogeographical observations made in microcontinents and exotic terranes. The same is done for platform-basinal transects of well-known continental margins. The parsimony analysis of endemicity analysis resulted in distinct palaeogeographical area groupings among the tectonostratigraphic units. With these groupings, several palaeobiogeographical units are distinguished, which do not necessarily fit the previously proposed biogeographical realms and provinces. Their development and spatial distributions are broadly controlled by Cambrian palaeoclimates, palaeogeographical conditions (e.g. carbonate productivity and anoxic conditions) and ocean current circulation.Supplementary material:Global dataset of Cambrian Epoch 2 (A), Cambrian Epoch 3 (B) and the Furongian Epoch (C) trilobite genera are provided at:http://www.geolsoc.org.uk/SUP18669

Publisher

Geological Society of London

Subject

Geology

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