Cretaceous Period Overview

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Which group of animals filled the skies during the Cretaceous period?

Sauropods and dinosaurs

Marine reptiles and mollusks

Pterosaurs and hairy-feathered birds (correct)

Rodents and conifers

What is believed by some scientists to have possibly caused the extinction of more than half the planet's species at the end of the Cretaceous period?

Volcanic eruption

Asteroid or comet impact (correct)

Supercontinent formation

Flowering plants spreading

What was cooling and moistening the planet's climate at the end of the Cretaceous period?

Shifted continents

Expanded coasts

Widened oceans

All of the above (correct)

What was left behind by vanished dinosaurs at the end of the Cretaceous period?

A void for mammals to fill Signup and view all the answers

What filled the forests of ferns, cycads, and conifers at the start of the Cretaceous period?

Rodents Signup and view all the answers

Which of the following statements accurately describes the climate changes during the Cretaceous period?

The climate experienced a temperature spike in the mid-Cretaceous, followed by a gradual cooling trend. Signup and view all the answers

Which of the following dinosaur groups dominated the southern continents during the Cretaceous period?

Sauropods Signup and view all the answers

Which of the following creatures faced stiffening competition from the diversifying birds during the Cretaceous period?

Pterosaurs Signup and view all the answers

According to the passage, which of the following creatures proliferated on the expanded coasts during the Cretaceous period?

Frogs, salamanders, turtles, crocodiles, and snakes Signup and view all the answers

Which of the following statements best describes the distribution of horned dinosaurs like Triceratops during the late Cretaceous?

They were found in vast herds on the northern continents. Signup and view all the answers

Cretaceous Period Overview

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Questions and Answers

Which group of animals filled the skies during the Cretaceous period?

What is believed by some scientists to have possibly caused the extinction of more than half the planet's species at the end of the Cretaceous period?

What was cooling and moistening the planet's climate at the end of the Cretaceous period?

What was left behind by vanished dinosaurs at the end of the Cretaceous period?

What filled the forests of ferns, cycads, and conifers at the start of the Cretaceous period?

Which of the following statements accurately describes the climate changes during the Cretaceous period?

Which of the following dinosaur groups dominated the southern continents during the Cretaceous period?

Which of the following creatures faced stiffening competition from the diversifying birds during the Cretaceous period?

According to the passage, which of the following creatures proliferated on the expanded coasts during the Cretaceous period?

Which of the following statements best describes the distribution of horned dinosaurs like Triceratops during the late Cretaceous?

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