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The Mesozoic Period, known as the “Age of Reptiles,” lasted from about 251.9 to 66 million years ago and is divided into three major periods: the Triassic, Jurassic, and Cretaceous. The Triassic Period, the earliest phase of the Mesozoic, marked the beginning of Pangea’s gradual breakup and witnessed the first appearance of both mammals and dinosaurs. This was followed by the Jurassic Period, during which Pangea continued to split and the Atlantic Ocean began to form. Dinosaurs significantly increased in size during this time, dominating the land. The final stage, the Cretaceous Period, saw the rise and rapid diversification of flowering plants, major advancements in insect evolution, and the peak of dinosaur activity.
Triassic Period
Triassic Period
The Triassic Period marks the beginning of the Mesozoic Era. During this time, the supercontinent Pangea began to break apart, slowly reshaping Earth’s landmasses. Early dinosaurs and the first small mammals appeared, although reptiles still dominated the environment. The climate was generally hot and dry, creating vast deserts across many regions.
Jurassic Period
Jurassic Period
During the Jurassic Period, Pangea continued to separate, eventually forming the early Atlantic Ocean. This time is famous for the growth and dominance of large dinosaurs, many of which became the most iconic species in Earth’s history. Lush forests and warm, humid climates supported a great variety of plant and animal life, including the first birds.
Cretacious Period
Cretacious Period
The Cretaceous Period is known for the rise and spread of flowering plants, which transformed Earth’s ecosystems. Dinosaurs reached their peak in diversity and size, and insects continued to evolve alongside new plant species. This period ended with the catastrophic Cretaceous Extinction, caused by a massive asteroid impact, which wiped out the dinosaurs and many other species.
CRETACEOUS EXTINCTION
CRETACEOUS EXTINCTION
The Mesozoic Era ended with the Cretaceous Extinction, a global mass extinction event that wiped out approximately 80% of all animal species around 66 million years ago. This catastrophic event is widely believed to have been caused by the impact of a massive asteroid or comet, estimated to be about six miles wide, which struck the area now known as the Yucatán Peninsula in Mexico. This impact drastically altered the planet’s climate and ecosystems, leading to the extinction of the dinosaurs and many other life forms.
Description of the mesozoic era :https://study.com/learn/lesson/mesozoic-era-timeline-animals-plants.html Triassic Period :https://www.ck12.org/flexi/biology/mesozoic-era/what-events-occurred-during-the-triassic-period/Jurassic Period : https://www.nationalgeographic.com/science/article/jurassicCretaceous Period :https://www.nps.gov/articles/000/cretaceous-period.htm#:~:text=During%20the%20Cretaceous%2C%20accelerated%20plate,swamps%2C%20lagoons%2C%20and%20beaches.
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