meso

• Mesozoic Era


  The age of the dinosaurs, an important era in Earth's history
• Mesozoic Era


  The age of the dinosaurs which lasted for almost 180 million years that spans from an estimated 250 to 65 million years
• Divisions of the Mesozoic era


  • Triassic
  • Jurassic
  • Cretaceous
• Plate Tectonics during the Mesozoic Era


  • Land masses are still intact
  • Until it separate on the next eras
• Environment during the Mesozoic era


  • Overall environment was unusually warm
  • Polar ice caps were not yet formed
• Triassic period


  1. The environment was generally warm

  2. The continents were still connected as one

  3. Dinosaurs evolved in the late-Triassic along with crocodilians, flying reptiles, sea-reptiles, and mammals
• Jurassic period


  1. A tectonic shift took place, several rifts were formed and filled with water, forming, what would later become many of today's oceans and seas

  2. Dinosaurs continued as the dominant species and evolved to be gigantic
• Cretaceous period


  1. The climate remained similar to that of the Jurassic period, warm and humid

  2. The environment evolved to the point that flowering plants (angiosperms) began to appear for the first time
• Life Forms During Mesozoic Era

  • Dinosaurs evolved, specifically at the end of the Triassic period
  • These organisms started to diversified in forms and sizes until the Jurassic period
  • During the early Mesozoic, the land was mainly dominated by ginkgophytes, cycads, ferns, and other unusual plants
• The Mesozoic Era is famous for the presence of dinosaurs. It is termed as the age of the dinosaurs which lasted for almost 180 million years and spanned from an estimated 250 to 65 million years ago.
• The Mesozoic era has three major periods, namely, the Triassic, Jurassic, and Cretaceous periods.
• The Triassic period started around 251 million years ago. It lasted for around 50 million years. The Triassic period involved two large extinction events, where dinosaurs were not yet diverse as it would become later in the Jurassic period.
• The Jurassic period started with a large extinction that took around 208 - 200 million years ago. The Pangaea separated significantly that may have caused the mass extinction related to volcanic activities due to the movement of the continental plates. These events allowed the dinosaurs to rule the planet.

  
• The Cretaceous period started approximately 144 million years ago. It can be directly translated as "chalk" that is based on its abundant chalk deposits. This period also marks the end of the dinosaur age due to the "Great Extinction".