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The Age of Dinosaurs, or Mesozoic Era, lasted from approximately 252 to 66 million years ago and is divided into the Triassic, Jurassic, and Cretaceous periods. During this time, dinosaurs evolved into diverse forms, with notable species including the eoraptor, Tyrannosaurus rex, and triceratops, before facing extinction due to a catastrophic event around 66 million years ago. The study of dinosaurs has intrigued scientists and the public since the early 19th century, leading to ongoing discoveries in paleontology.

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49 views1 page

Script and Answer Key

The Age of Dinosaurs, or Mesozoic Era, lasted from approximately 252 to 66 million years ago and is divided into the Triassic, Jurassic, and Cretaceous periods. During this time, dinosaurs evolved into diverse forms, with notable species including the eoraptor, Tyrannosaurus rex, and triceratops, before facing extinction due to a catastrophic event around 66 million years ago. The study of dinosaurs has intrigued scientists and the public since the early 19th century, leading to ongoing discoveries in paleontology.

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An Bình Phạm
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The Age of Dinosaurs, also known as the Mesozoic Era, was a time of great change and

evolution on Earth. It spanned from approximately 252 to 66 million years ago. This era is
divided into three periods: the Triassic, Jurassic, and Cretaceous. During this time, dinosaurs
dominated the Earth, and their remains continue to fascinate and captivate people today.
The Triassic period, which occurred between 252 and 201 million years ago, saw the
emergence of the first dinosaurs. These creatures were small and primarily bipedal with
elongated hind limbs that allowed for efficient locomotion. They were also relatively slow-
moving and not as agile as later dinosaurs. One of the most notable early dinosaurs was the
eoraptor which was discovered in Argentina in 1991. Pterosaurs, a type of flying reptile, also
emerged during this period.
The Jurassic period, which occurred between 201 and 145 million years ago, is perhaps the
most well-known of the three periods. During this time, dinosaurs evolved into a diverse range
of shapes and sizes. Herbivorous dinosaurs like the apatosaurus and stegosaurus roamed the
land, while carnivorous dinosaurs like the allosaurus and velociraptor hunted for prey.
The Cretaceous period, which occurred between 145 and 66 million years ago, saw the
emergence of even larger and more diverse dinosaurs. The Tyrannosaurus rex, which lived
during this period, is perhaps the most well-known of all dinosaurs. This massive predator
stood up to 20 feet tall and had powerful jaws that could crush bone. Other notable dinosaurs
from this period include the triceratops, a herbivore with three horns on its head, and the
ankylosaurus, a heavily armored dinosaur that used its tail as a weapon.
Despite their dominance, the dinosaurs were unable to survive a catastrophic event that
occurred approximately 66 million years ago. This event, which is believed to have been a
massive asteroid impact, caused widespread extinction among the dinosaurs and many other
species. However, some dinosaurs did survive this event and evolved into birds which are still
with us today.
The study of dinosaurs has captivated scientists and the public alike, for centuries. In the early
19th century, scientists began to study the bones of these ancient creatures, leading to a greater
understanding of their anatomy and behavior. Today, paleontologists continue to make new
discoveries and uncover new information about these fascinating creatures.
ANSWER KEY:
1. A. Mesozoic
2. D. eoraptor
3. A. Triassic
4. B. its tail
5. C. 66 million years ago
6. B. the early 19th century

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