1. Tarling, D. H. in Climatic Change (ed. Gribbin, J.) 3–24 (Cambridge University Press, 1978).
2. Denton, G. H., Armstrong, R. L. & Stuiver, M. in Late Cenozoic Glacial Ages (ed. Turekian, K. K.) 267–306 (New Haven, 1971).
3. Kennett, J. P. J. geophys. Res. 82, 3843–3860 (1977); Mar. Micropai 3, 301–345 (1978).
4. Smith, A. G. & Briden, J. C. Mesozoic and Cenozoic Paleocontinental Maps (Cambridge University Press, 1977).
5. Kennett, J. P. et al. Init. Rep. DSDP 29, 1155–1169 (1975).