Early Pleistocene stage (1.806–0.781 Ma ago), preceded by the Gelasian and followed by the Middle Pleistocene, that is noted for major evolutionary changes in mammalian faunas. See also castlecliffian; quaternary.
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。