cretaceous in a sentence
a.
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Definition
Cretaceous refers to the geological period that occurred approximately 145 to 66 million years ago, characterized by the dominance of dinosaurs and significant geological and biological changes.
Sample Sentences
- The Cretaceous period is known for its diverse array of dinosaur species.
- Fossils from the Cretaceous provide valuable insights into Earth's prehistoric ecosystems.
- During the Cretaceous, the continents were positioned differently than they are today.
- The end of the Cretaceous is marked by a mass extinction event that wiped out many species.
- Geologists study the rock layers from the Cretaceous to understand geological changes over time.
- The Cretaceous period was marked by the dominance of dinosaurs on Earth.
- Fossils from the Cretaceous often reveal a diverse array of marine life.
- During the late Cretaceous, the climate was significantly warmer than today.
- The Cretaceous extinction event led to the disappearance of nearly 75% of all species.
- Paleontologists frequently study Cretaceous rock formations to understand Earth's history.