Abstract - Upper Devonian ammonoids from the Canning Basin of Westem
    Australia represent one of the most diverse faunas globally known.  It consists
    of cosmopolitan (pantropical), endemic and "spot" taxa (with disjunct
    distribution in few widely separaten basin).  Endensm is low at the generic
    but very significant (ca. 50%) at the species level.  Linked with regional facies
    change and eustatic influences, there were alternating episodes with low-
    diverse, relatively highly endemic or with species-rich and rather
    cosmopolitan faunas.  Faunal sinlarities both in the Frasnian and Famennian
    were closest with Germany, slightly less with North Africa, SW England, the
    Ardennes, and the Montagne Noire.  Frasnian faunal links with the Timan
    and eastern North America were severed after the Frasnian-Famennian
    boundary whilst relationships with the Urals and Poland became closer.
    Faunal similarities were clearly more dependent on regional facies
    developments of plates than on their spatial distance.  The regional
    diversity curve reflects both global extinctions and radiations as well as effects
    of Canning Basin structural evolution.  Three major extinctions, the Bugle Gap,
    Lower Kellwasser and Upper Kellwasser Events occurred in the Frasnian.
    Not a single ammonoid species regionally survived the Frasnian-Famennian
    boundary and the basal Famennian lacked ammonoids all over Australia.  The
    post-Annulata Event regression regionally initiated a strong final decline of
    ammonoid faunas.