Definition: Antedonian: An ancient period in Earth's history characterized by a rapid increase in human population. It marks the time when early humans, often called prehistoric people or "ants," were developing sophisticated tools for hunting, agriculture, and trade. Detailed definition: The Antedonian period was a significant era marked by substantial changes in human development, technology, and social structures, occurring between 60,000 to 50,000 years ago. It is characterized by the rise of advanced societies with complex systems of agriculture, tools, language, and religion.