ACKNOWLEDGEMENTS

This paper benefited greatly from two constructive anonymous reviewers. Fieldwork in Antarctica for Hikuroa was supported by the British Antarctic Survey, and passage to the United Kingdom was made possibly by a Claude McCarthy travel fellowship (New Zealand Vice-Chancellor's Committee) and the Trans-Antarctic Expedition Fund. Hikuroa gratefully acknowledges funding from the Foundation of Research, Science, and Technology (FRST) and Te Mata o te Tau. Thanks are due also to B. Sporli for translations of German text and J. Grant-Mackie for translations of French text. P. Quilty made available collections of belemnites from his 1965/66 field work. This paper contributes to the BAS science SPARC project.