Supercontinent Laurasia had not yet separated into three continents - Europe and Greenland were still connected, North America and Asia were still intermittently joined by a land bridge, while Greenland and North America were beginning to separate.
V Severni Ameriki, Evropi, Avstraliji in Južni Ameriki je bilo toplo in zmerno, ekvatorialna področja si imela tropsko podnebje, severno in južno od ekvatorialnih območjih je bilo podnebje vroče in sušno.