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Copulation in antiarch placoderms and the origin of gnathostome internal fertilization

Author

Listed:
  • John A. Long

    (School of Biological Sciences, Flinders University, 2100, Adelaide, South Australia 5001, Australia
    Natural History Museum of Los Angeles County, 900 Exposition Boulevard
    Museum Victoria, PO Box 666)

  • Elga Mark-Kurik

    (Institute of Geology at Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia)

  • Zerina Johanson

    (Natural History Museum, London SW7 5BD, UK)

  • Michael S. Y. Lee

    (South Australian Museum, North Terrace
    School of Earth and Environmental Sciences, The University of Adelaide)

  • Gavin C. Young

    (Research School of Earth Sciences, The Australian National University, Canberra, Australian Capital Territory 0200, Australia)

  • Zhu Min

    (Key Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, PO Box 643, Beijing 100044, China)

  • Per E. Ahlberg

    (Evolutionary Biology Centre, Uppsala University, Norbyvägen 18A, 752 36 Uppsala, Sweden)

  • Michael Newman

    (Vine Lodge, Vine Road, Johnston, Haverfordwest, Pembrokeshire SA62 3NZ, UK)

  • Roger Jones

    (6 Burghley Road, Wimbledon, London SW19 5BH, UK)

  • Jan den Blaauwen

    (University of Amsterdam, Science Park 904, 1098XH, Amsterdam, The Netherlands)

  • Brian Choo

    (School of Biological Sciences, Flinders University, 2100, Adelaide, South Australia 5001, Australia)

  • Kate Trinajstic

    (Western Australian Organic and Isotope Geochemistry Centre, Curtin University
    Earth and Planetary Sciences, Western Australian Museum)

Abstract

The discovery of claspers in fossils of antiarch placoderms, an ancient group of armoured fish, suggests that internal fertilization was the ancestral type of reproduction for all jawed vertebrates: this contrasts with the current understanding that external fertilization must be the ancestral state.

Suggested Citation

  • John A. Long & Elga Mark-Kurik & Zerina Johanson & Michael S. Y. Lee & Gavin C. Young & Zhu Min & Per E. Ahlberg & Michael Newman & Roger Jones & Jan den Blaauwen & Brian Choo & Kate Trinajstic, 2015. "Copulation in antiarch placoderms and the origin of gnathostome internal fertilization," Nature, Nature, vol. 517(7533), pages 196-199, January.
    • Handle: RePEc:nat:nature:v:517:y:2015:i:7533:d:10.1038_nature13825
    DOI: 10.1038/nature13825
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