A series (348–340 Ma ago) in the Mississippian of N. America, underlain by the Kinderhookian, overlain by the Meramecian, and containing the Ivorian stage of the Tournaisian series and the Chadian stage of the Visean series.
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。