Exploring the Mesozoic Era

The Mesozoic Era, starting 251 million years ago, was marked by significant geological and biological changes. Pangaea began to break apart, forming the Sierra Nevada and Rocky Mountains. Dinosaurs, such as Allosaurus and Camarasaurus, dominated the era, known as the age of reptiles. New lifeforms like flowering plants, early birds, and mammals emerged. The era ended 65.5 million years ago with a mass extinction, including the demise of dinosaurs.

What major geological event occurred during the Mesozoic Era?

• The breakup of Pangaea

• The formation of the Himalayas

• The creation of the Grand Canyon

• The rise of Mount Everest

Which dinosaur was known as a ferocious carnivore during the Mesozoic Era?

• Stegosaurus

• Triceratops

• Allosaurus

• Brachiosaurus

What is the Mesozoic Era often referred to as?

• The age of fish

• The age of reptiles

• The age of birds

• The age of mammals

Which of the following lifeforms emerged towards the end of the Mesozoic Era?

• Insects

• Early birds

• Amphibians

• Reptiles

What significant event marked the end of the Mesozoic Era?

• The appearance of humans

• The formation of the Atlantic Ocean

• The extinction of many species including dinosaurs

• The rise of mammals