Cretaceous Period

Cretaceous Period

The geological period from approximately 145 to 66 million years ago, known for diverse dinosaur species and the mass extinction event.

Theropods

A group of bipedal carnivorous dinosaurs, including Tyrannosaurus rex and Velociraptor, characterized by sharp teeth and claws.

Sauropods

Long-necked dinosaurs like Brachiosaurus and Apatosaurus that fed on tall vegetation and had massive sizes for protection from predators.

Ornithopods

Herbivorous dinosaurs such as Iguanodon and Hadrosaurus, known for beak-like mouths and the ability to walk on two or four legs.

Ceratopsians

Dinosaurs like Triceratops and Stegosaurus characterized by unique features such as frills and horns for protection.

Mass extinction event

A significant event marking the end of the Cretaceous period, leading to the extinction of about 75% of Earth's species.

Asteroid Impact

A catastrophic event believed to be responsible for the mass extinction at the end of the Cretaceous, linked to the Chicxulub crater in Mexico.

Volcanic Activity

Extensive eruptions, notably the Deccan Traps, contributing to environmental changes and climate disruptions during the Cretaceous.

Climate Change

Dramatic shifts in climate caused by combined effects of asteroid impact and volcanic eruptions, leading to a 'nuclear winter' scenario.

Ecosystem Impact

The significant effects on global ecosystems due to climate changes, resulting in widespread extinctions of species.