A new family of monotremes feom the Creataceous of Australia

  title={A new family of monotremes feom the Creataceous of Australia},
  author={Tim Fridtjof Flannery and Michael Archer and Thomas H. Rich and Robert Leslie Jones},
AUSTRALIA'S second Mesozoic mammal, Kollikodon ritchiei (Monotremata, Kollikodontidae, new family) has an extreme bunodont molar morphology. The existence of two distinctively different families of monotremes in the Early Cretaceous suggests that the order originated long before the Cretaceous and was very diverse in at least the Australian portion of eastern Gondwana. With four families now known from Australia, it is probable that monotremes originated and diversified in the Australian… 

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