IDEAS home Printed from https://ideas.repec.org/a/nat/nature/v502y2013i7470d10.1038_nature12617.html
   My bibliography  Save this article

A Silurian placoderm with osteichthyan-like marginal jaw bones

Author

Listed:
  • Min Zhu

    (Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences)

  • Xiaobo Yu

    (Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences
    Kean University, Union)

  • Per Erik Ahlberg

    (Evolutionary Biology Centre, Uppsala University, Uppsala 752 36, Sweden)

  • Brian Choo

    (Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences)

  • Jing Lu

    (Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences)

  • Tuo Qiao

    (Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences)

  • Qingming Qu

    (Evolutionary Biology Centre, Uppsala University, Uppsala 752 36, Sweden)

  • Wenjin Zhao

    (Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences)

  • Liantao Jia

    (Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences)

  • Henning Blom

    (Evolutionary Biology Centre, Uppsala University, Uppsala 752 36, Sweden)

  • You’an Zhu

    (Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences)

Abstract

The gnathostome (jawed vertebrate) crown group comprises two extant clades with contrasting character complements. Notably, Chondrichthyes (cartilaginous fish) lack the large dermal bones that characterize Osteichthyes (bony fish and tetrapods). The polarities of these differences, and the morphology of the last common ancestor of crown gnathostomes, are the subject of continuing debate. Here we describe a three-dimensionally preserved 419-million-year-old placoderm fish from the Silurian of China that represents the first stem gnathostome with dermal marginal jaw bones (premaxilla, maxilla and dentary), features previously restricted to Osteichthyes. A phylogenetic analysis places the new form near the top of the gnathostome stem group but does not fully resolve its relationships to other placoderms. The analysis also assigns all acanthodians to the chondrichthyan stem group. These results suggest that the last common ancestor of Chondrichthyes and Osteichthyes had a macromeric dermal skeleton, and provide a new framework for studying crown gnathostome divergence.

Suggested Citation

  • Min Zhu & Xiaobo Yu & Per Erik Ahlberg & Brian Choo & Jing Lu & Tuo Qiao & Qingming Qu & Wenjin Zhao & Liantao Jia & Henning Blom & You’an Zhu, 2013. "A Silurian placoderm with osteichthyan-like marginal jaw bones," Nature, Nature, vol. 502(7470), pages 188-193, October.
    • Handle: RePEc:nat:nature:v:502:y:2013:i:7470:d:10.1038_nature12617
    DOI: 10.1038/nature12617
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/nature12617
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1038/nature12617?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Xindong Cui & Matt Friedman & Yilun Yu & You-an Zhu & Min Zhu, 2023. "Bony-fish-like scales in a Silurian maxillate placoderm," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:nature:v:502:y:2013:i:7470:d:10.1038_nature12617. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.