First spinosaurid dinosaur from Australia and the cosmopolitanism of Cretaceous dinosaur faunas

Paul Barrett, Roger Benson, Thomas Rich, Patricia Vickers Rich

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    Abstract

    A cervical vertebra from the Early Cretaceous of Victoria represents the first Australian spinosaurid theropod dinosaur. This discovery significantly extends the geographical range of spinosaurids, suggesting that the clade obtained a near-global distribution before the onset of Pangaean fragmentation. The combined presence of spinosaurid, neovenatorid, tyrannosauroid and dromaeosaurid theropods in the Australian Cretaceous undermines previous suggestions that the dinosaur fauna of this region was either largely endemic or predominantly Gondwanan in composition. Many lineages are well-represented in both Laurasia and Gondwana, and these observations suggest that Early- middle Cretaceous theropod clades possessed more cosmopolitan distributions than assumed previously, and that caution is necessary when attempting to establish palaeobiogeographic patterns on the basis of a patchily distributed fossil record
    Original languageEnglish
    Pages (from-to)933 - 936
    Number of pages4
    JournalBiology Letters
    Volume7
    Issue number6
    DOIs
    Publication statusPublished - 2011

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