A stage (61.5–55.8 Ma ago) in the Palaeocene of California, underlain by the N. American Danian, overlain by the Bulitian, and roughly contemporaneous with the upper Danian and lower Thanetian stages of Europe.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。