"Oligocene" Example Sentences
1. The oligocene period lasted from about 33.9 to 23 million years ago.
2. Fossils from the oligocene show the emergence of many modern groups of mammals.
3. During the oligocene, the Earth's climate cooled and dry conditions prevailed.
4. The first grasses appeared during the oligocene.
5. The oligocene was characterized by the spread of grasslands.
6. The oligocene saw the diversification of primates.
7. Many modern bird families also appeared during the oligocene.
8. The oligocene is an important period for understanding the evolution of modern ecosystems.
9. The oligocene was a transitional period in the evolution of many groups of organisms.
10. The oligocene saw the expansion of forests in high latitudes.
11. The oligocene was a time of significant geological activity, with the formation of many mountain ranges.
12. The oligocene saw the emergence of the first elephants.
13. The oligocene witnessed the rise of many carnivorous mammals.
14. The oligocene is a key period for the study of mammalian evolution.
15. The oligocene saw the emergence of many modern families of rodents.
16. During the oligocene, there were significant changes in ocean circulation patterns.
17. The oligocene saw the appearance of the first whales.
18. The oligocene was a time of significant tectonic activity, with the formation of many new land masses.
19. The oligocene saw the diversification of many types of marine life.
20. The oligocene is important for understanding climate change and its effects on the environment.
21. The oligocene saw the development of many modern types of trees.
22. The oligocene was a period of transition from ancient to modern ecosystems.
23. The oligocene saw the emergence of many modern families of bats.
24. During the oligocene, many types of dinosaurs went extinct.
25. The oligocene saw the development of many modern types of flowering plants.
26. The oligocene was a time of significant volcanic activity.
27. The oligocene saw the emergence of the first canids.
28. The oligocene saw the development of many modern types of grasses.
29. The oligocene was a time of significant oceanic cooling.
30. The oligocene is important for understanding the evolution of many modern groups of animals.
Common Phases
1. The
Oligocene epoch occurred approximately 33.9 million to 23 million years ago;
2. During the
Oligocene, modern flora and fauna began to emerge;
3. The climate during the
Oligocene was warm and humid;
4. The Antarctic ice sheet began to form during the late
Oligocene;
5. The end of the
Oligocene was marked by a major extinction event;
6. Many important species of mammals, including the ancestors of modern horses and deer, first appeared during the
Oligocene;
7. The
Oligocene is part of the with massive Cenozoic cooling trend.