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SpeakBase Times·Science·
Scientists Find 66-Million-Year-Old Blood Vessels Inside T-Rex Bones
Scientists have discovered remarkably preserved ancient blood vessels hidden inside fossilized dinosaur bones, including a Tyrannosaurus rex specimen whose bone had fractured and begun healing 66 million years ago. Using advanced imaging techniques that allow researchers to peer inside fossil bones without breaking them, the team found structures that were long thought impossible to survive the fossilization process. The discovery fundamentally changes our understanding of how fossils can preserve delicate biological structures over tens of millions of years.
By SpeakBase Times Editorial Team
Level 1 — Absolute Beginner
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Reading PassageTap highlighted words for definitions
Scientists made an amazing discovery inside very old dinosaur bones. They found tiny blood vessels that are 66 million years old. Blood vessels are small tubes inside bones that carry blood. No one thought these soft parts could last so long inside fossils.
One of the bones came from a Tyrannosaurus rex, one of the biggest and most famous dinosaurs. The T-Rex bone had a fracture, which means it was broken. But the bone had started to heal before the dinosaur died. Scientists could see the healing because of the preserved blood vessels inside.
For a long time, scientists believed that fossils only keep the hard parts of animals, like bones and teeth. Soft tissue like blood vessels was thought to disappear over millions of years. This discovery proves that idea was wrong. Soft tissue can survive inside fossils for a very long time.
The scientists used special imaging techniques to look inside the fossil bones. These techniques let them see the blood vessels without breaking the fossils open. This is very important because fossils are rare and precious. Thanks to this discovery, we now understand much more about how fossils preserve parts of ancient animals.
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Key Vocabularyblood vessels —Small tubes inside the body that carry blood.
fossils —The remains of ancient plants or animals preserved in rock.
Tyrannosaurus rex —A very large meat-eating dinosaur that lived millions of years ago.
fracture —A break or crack in a bone.
preserved —Kept safe from damage over a long time.
soft tissue —The soft parts of the body, like blood vessels and muscles.
imaging techniques —Special tools that let scientists see inside objects without opening them.
ancient —Very, very old; from a long time ago.
Exercises
Multiple Choice
1How old are the blood vessels found inside the bones?
2Which dinosaur did one of the bones come from?
3What had happened to the T-Rex bone?
4What did scientists believe about soft tissue in fossils before?
5Why are imaging techniques important for studying fossils?
True or False
6Blood vessels are small tubes that carry blood.
7The T-Rex bone was completely healthy with no damage.
8Scientists always knew soft tissue could survive in fossils.
9Fossils are the remains of ancient plants or animals.
10Scientists had to break the fossils open to see inside them.
Fill in the Blank
11Scientists found tiny ___ ___ that are 66 million years old inside dinosaur bones.
12The T-Rex bone had a ___, which means it was broken.
13Scientists used special ___ ___ to look inside the fossil bones.
Matching
blood vessels
fossils
fracture
soft tissue