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  • Cartilage, bone and intermandibular connective tissue in the Australian lungfish, Neoceratodus forsteri (Osteichthyes: Dipnoi)

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    Author(s)
    Kemp, Anne
    Griffith University Author(s)
    Kemp, Anne R.
    Year published
    2013
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    Abstract
    The connective tissue that links the bones of the mandible in the Australian lungfish, Neoceratodus forsteri, has been described as an intermandibular cartilage, and as such has been considered important for phylogenetic analyses among lower vertebrates. However, light and electron microscopy of developing lungfish jaws demonstrates that the intermandibular tissue, like the connective tissue that links the bones of the upper jaw, contains fibroblasts and numerous bundles of collagen fibrils, extending from the trabeculae of the bones supporting the tooth plates. It differs significantly in structure and in staining reactions ...
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    The connective tissue that links the bones of the mandible in the Australian lungfish, Neoceratodus forsteri, has been described as an intermandibular cartilage, and as such has been considered important for phylogenetic analyses among lower vertebrates. However, light and electron microscopy of developing lungfish jaws demonstrates that the intermandibular tissue, like the connective tissue that links the bones of the upper jaw, contains fibroblasts and numerous bundles of collagen fibrils, extending from the trabeculae of the bones supporting the tooth plates. It differs significantly in structure and in staining reactions from the cartilage and the bone found in this species. In common with the cladistian Polypterus and with actinopterygians and some amphibians, lungfish have no intermandibular cartilage. The connective tissue linking the mandibular bones has no phylogenetic significance for systematic grouping of lungfish, as it is present in a range of different groups among lower vertebrates.
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    Journal Title
    Journal of Morphology
    Volume
    274
    Issue
    10
    DOI
    https://doi.org/10.1002/jmor.20164
    Copyright Statement
    © 2013 John Wiley & Sons, Ltd. This is the pre-peer reviewed version of the following article: Cartilage, bone and intermandibular connective tissue in the Australian lungfish, Neoceratodus forsteri (Osteichthyes: Dipnoi) in Journal of Morphology, Vol. 274(10), pp. 1085-1089, 2013, which has been published in final form at http://dx.doi.org/10.1002/jmor.20164.
    Subject
    Environmental Sciences not elsewhere classified
    Physiology
    Zoology
    Publication URI
    http://hdl.handle.net/10072/58710
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    • Journal articles

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