1. Limitations on K-T mass extinction theories based on the vertebrate record;Archibald;LPI Contribution,1988
2. Arnold J. M. (1987) in Nautilus: The Biology and Paleobiology of a Living Fossil, Reproduction and embryology of Nautilus, eds Saunders W. B. Landman N. H. (Plenum, New York), pp 353–372.
3. The Cenomanian-Turonian Oceanic Anoxic Event, II. Palaeoceanographic controls on organic-matter production and preservation;Arthur,1987
4. Bambach R. K. (1977) Species richness in marine benthic habitats through the Phanerozoic. Paleobiology, 3:152–167.
5. The terminal Cretaceous extinction in Boreal shelf seas — A multicausal event;Birkelund,1982