The Spinosaurus Discovery


The Spinosaurus Discovery
Imagine a dinosaur that was part crocodile, part duck, and part sail. This is the Spinosaurus, and its discovery changed everything we thought we knew about dinosaurs!
An Ancient Mystery
For many years, scientists believed that all meat-eating dinosaurs were land-based hunters. The Spinosaurus, however, turned out to be different. The first bones of Spinosaurus were found in Egypt in 1912 by a German paleontologist named Ernst Stromer. Sadly, those bones were destroyed during World War II. For decades, all scientists had were Stromer’s drawings and notes.
Rediscovering the Spinosaurus
In the early 2000s, more Spinosaurus bones were found in Morocco. These new fossils, combined with Stromer’s notes, helped scientists get a better understanding of this amazing creature. They learned that Spinosaurus was bigger than a T-Rex and had several unique features.
A River Monster
One of the biggest surprises was that Spinosaurus was likely a swimmer! Its bones were very dense, which would have helped it stay underwater. It also had a long snout with teeth perfect for catching fish. Its flat feet were probably webbed, like a duck’s, to help it swim. Scientists now believe Spinosaurus spent much of its life in the water, making it the first known swimming dinosaur.
The Sail on Its Back
Another amazing feature of Spinosaurus was the huge sail on its back. This sail was made of long spines covered with skin. Scientists aren’t sure what the sail was used for. It might have been used to attract mates, scare away enemies, or control body temperature. Whatever its purpose, the sail made Spinosaurus look like no other dinosaur!
What the Spinosaurus Tells Us
The discovery of Spinosaurus taught scientists that dinosaurs were more diverse than they ever imagined. It showed that some dinosaurs lived in the water and hunted in rivers and lakes. This discovery has opened the door for more research and has changed the way we think about dinosaurs and their lifestyles forever.

Listen to The Spinosaurus Discovery
PicoBuddy read-aloud story
- Paleontologist:
- A scientist who studies fossils to learn about ancient life.
- Fossils:
- The remains or traces of ancient plants and animals.
- Diverse:
- Showing a great deal of variety.
- Snout:
- The nose or jaws that stick out in front of an animal's head.
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About this informational passage for Upper Elementary
“The Spinosaurus Discovery” is a informational reading passage about Spinosaurus, written for Upper Elementary. It takes about 2 minutes to read (326 words) and comes with an interactive quiz and a printable worksheet with comprehension questions and an answer key.


