The Biggest Dinosaur in Southeast Asia

May 15, 2026, 16:57
AsiaScience

Introduction

Scientists found a new dinosaur in Thailand. Its name is Nagatitan chaiyaphumensis.

Main Body

The dinosaur was very big. It was 27 meters long. It weighed about 25 to 28 tonnes. It is the largest dinosaur in Southeast Asia. This dinosaur lived 100 to 120 million years ago. It lived near rivers in a hot place. Other animals lived there too, like crocodiles and flying reptiles. Nagatitan had air sacs in its bones. This made its heavy body lighter. Later, the land became a sea, and these dinosaurs could not live there anymore.

Conclusion

Now, scientists know about 14 types of dinosaurs in Thailand. This discovery helps them understand the past.

Learning

The 'Past' Secret

To reach A2, you must master how to talk about things that are finished. In this text, we see a pattern with the word was.

The Rule: When one thing or person is the subject, we use was instead of is.

  • Now →\rightarrow It is big.
  • Then →\rightarrow It was big.

Examples from the text:

  • "The dinosaur was very big."
  • "It was 27 meters long."

Word Pairs: Size and Weight

Beginners often confuse 'long' and 'heavy'. Look at how the text separates them:

  1. Length (Distance): 27 meters →\rightarrow long
  2. Weight (Heaviness): 28 tonnes →\rightarrow weighed (or heavy)

Quick Tip: Use long for a line and heavy for a scale!

Vocabulary Learning

scientist (n.)
a person who studies science
Example:The scientist studied the dinosaur fossils.
found (v.)
to discover something
Example:They found a new dinosaur in Thailand.
new (adj.)
recently made or discovered
Example:The new dinosaur is very big.
dinosaur (n.)
a large extinct reptile
Example:The dinosaur was 27 meters long.
big (adj.)
large in size
Example:The dinosaur was very big.
long (adj.)
having a great length
Example:It was 27 meters long.
weigh (v.)
to measure weight
Example:It weighed about 25 tonnes.
tonne (n.)
a unit of weight equal to 1000 kilograms
Example:It weighed 25 tonnes.
largest (adj.)
biggest in size
Example:It is the largest dinosaur in Southeast Asia.
lived (v.)
existed in the past
Example:The dinosaur lived 100 to 120 million years ago.
near (prep.)
close to
Example:It lived near rivers.
river (n.)
a large natural watercourse
Example:The dinosaur lived near rivers.
hot (adj.)
having a high temperature
Example:It lived in a hot place.
place (n.)
a particular area
Example:It lived in a hot place.
other (adj.)
different from the one mentioned
Example:Other animals lived there too.