1. The fourth epoch of the Cenozoic Era, lasting from approximately 23 to 5 million years ago, characterized by the expansion of grasslands and the evolution of many modern mammal groups.
Usage: geology; paleontology; capitalized

1. Of, relating to, or denoting the Miocene epoch or its rocks and fossils.
Usage: geology; paleontology; capitalized

Examples

• The Miocene epoch saw the rise of many modern mammal families.
• Miocene fossils reveal that early apes lived in Africa during this period.
• Grasslands expanded significantly during the Miocene, changing global ecosystems.
• Scientists study Miocene rock formations to understand climate change over millions of years.
• The Miocene climate was warmer and more humid than the present day.