oligocene in a sentence
a.
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Definition
Oligocene refers to a geological epoch in the late Paleogene period, spanning from about 34 to 23 million years ago, characterized by notable climatic changes and the emergence of modern mammal families.
Sample Sentences
- The Oligocene period is known for significant changes in the Earth's climate and ecosystems.
- Fossils from the Oligocene reveal the early evolution of many modern mammal families.
- During the Oligocene, the formation of the Himalayas began to influence global weather patterns.
- Researchers are uncovering new species that thrived during the Oligocene epoch in sedimentary rocks.
- The Oligocene is marked by a transition towards cooler temperatures, leading to diversified flora and fauna.