Significance of calcareous nannofossil-bearing Jurassic and Cretaceous sediments on the Rowley Terrace, offshore northwest Australia

Examination of dredge hauls taken from the Rowley Terrace, northwest Australia, has revealed the occurrence of several Mesozoic nannofossil-bearing levels. Dating has been satisfactorily achieved even though some key species important for subdividing Mesozoic rocks elsewhere are either missing or have a different stratigraphic significance, in northwest Australia.