"It is demonstrated that from initially coolish conditions in Neocomian times, two Cretaceous climatic maxima occurred--in the Albian and later in the Coniacian-Santonian (lower Senonian). The effects of these extended from Europe into India, but are not apparent in the single Japanese specimen analyzed. Subsequently, climatic deterioration took place followed by stable, lower temperature conditions in the Maestrichtian. It is possible that the Cretaceous poles lay near the present day Bering Sea and South Africa respectively with the equatorial region running from the southern United States through Europe. The Jurassic equator probably occupied a closely similar position and the principal climatic distinction between the two periods is the greater equability of the earlier."