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How do you use cretaceous- tertiary extinction in a sentence?
A meteorite impacted Earth and caused the cretaceous-tertiary extinction.
What did the Cretaceous - Tertiary extinction event end?
The Tertiary Era.
How does the Cretaceous-Tertiary extinction relate to the age of Mammals?
The extinction of so many organisms left a large ecological niche to expand into, which mammals did.
How do you use tertiary in a a sentence?
A meteorite impacted Earth and caused the cretaceous-tertiary extinction.
Was the k-t extinction in the Tertiary period?
The k-t extinction was ~65million years ago and marks the transition from the Cretaceous to the Tertiary period.
Did Cretaceous-Tertiary extinction have falling sea levels?
No, the global sea level was high.
Did organisms live before Cretaceous Tertiary?
Yes, many.
What was the cretaceous-tertiary event?
A meteorite impacted Earth, causing devastation of the planet and mass extinction.
What is the K-T extinction?
The k-t extinction marks the transition from the cretaceous to the tertiary period in which it is hypothesized that a meteorite struck the Earth and caused a mass extinction.
When did the Cretaceous Tertiary extinction occur?
About 65.5 million years ago. The Cretaceous and Tertiary are geological time periods either side of this event. The event is significant because there was a large mass extinction event at this time including the extinction of all non avian dinosaurs. Most experts agree that the cause of the extinction was a asteroid impact.
Did the K-T extinction occur before or during the Tertiary period?
The Tertiary Period (65.5 to 2.588Ma) is the informal name for the geological period that followed the K-T extinction event. So the K-T event happened before the Tertiary. In fact "K-T" is actually short for Cretaceous-Tertiary as it marked the end of the Cretaceous and the start of the Tertiary.The lower tertiary is more formally known as the Paleogene Period(65.5 - 23.03 Ma) and the upper Tertiary is more formally known as the Neogene Period(23.03 - 2.588Ma).
How does the fossil record provide evidence for the Cretaceous tertiary extinction?
The Cretaceous-Tertiary Extinction was a giant asteroid that hit Earth and killed many organisms. It formed giant dust clouds and enough heat to cause a worldwide fires. The fossils of the dead organisms gave out a story to the scientists who were researching them. For example, a meat-eating dinosaur ate a plant-eating dinosaur during the Cretaceous-Tertiary Extinction. Soon after the meat-eating dinosaur ate the plant-eating dinosaur, the meat-eating dinosaur died. The fossil of the plant-eating dinosaur and the meat-eating dinosaur told a story to the scientist about what the meat-eating dinosaur did to the other dinosaur; then the other story to the meat-eating dinosaur. You're welcome :) -Ashley G
