The uppermost stage in the Devonian of Australia, underlain by the Condobolinian stage, overlain by the Carboniferous, and roughly contemporaneous with the upper Frasnian and Famennian 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。