A stage (28–27 Ma ago) in the Oligocene of New Zealand, underlain by the Whaingaroan, overlain by the Waitakian, and roughly contemporaneous with the mid Chattian stage.
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。