Baby Stegosaurus Coloring Page

Bring prehistoric history to life with this baby Stegosaurus coloring page, featuring an educational reading passage about how these armored giants grew up.

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Reading activity

Optional · Reading: Upper Elementary

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Life as a Baby Stegosaurus

Millions of years ago, the Earth was home to some of the most famous creatures to ever live: the dinosaurs. Among these giants was the Stegosaurus, a dinosaur known for the large plates on its back and the sharp spikes on its tail. While we often imagine these dinosaurs as massive beasts, every giant had to start out small. A baby Stegosaurus was a tiny, vulnerable creature in a world filled with huge predators.

When a baby Stegosaurus first hatched from its egg, it was surprisingly small. Scientists estimate that a newborn was about the size of a modern-day house cat. This is hard to believe when you consider that a full-grown adult could grow to be thirty feet long and weigh as much as an elephant! These babies were born from eggs laid in nests on the ground. Paleontologists believe that mother dinosaurs might have stayed nearby to protect their young from danger, although the hatchlings likely had to find their own food soon after birth.

One of the biggest mysteries about baby Stegosauruses involves their famous armor. While adults had two rows of tall, bony plates sticking up from their backs, babies were born with very small, flat bumps. As the dinosaur grew, these bumps slowly transformed into the diamond-shaped plates we recognize today. These plates weren't just for show; they may have helped the dinosaur control its body temperature or made the animal look larger to scare away hungry meat-eaters.

The baby's tail was also different from an adult's. The four sharp spikes at the end of the tail, sometimes called a "thagomizer," were much smaller and softer at birth. As the youngster matured, these spikes became hard and deadly weapons. Life was dangerous in the Jurassic period, so growing up quickly was important. By eating plenty of soft ferns and mosses, a baby Stegosaurus could gain hundreds of pounds a year until it finally became an armored giant of the prehistoric forest.

Glossary
  • Paleontologist: A scientist who studies fossils to learn about organisms that lived long ago.
  • Vulnerable: In a state where it is easy to be hurt, attacked, or at risk.
  • Hatchling: A young animal that has recently emerged from its egg.
  • Thagomizer: The informal name for the group of four spikes on the tail of a Stegosaurus.
  • Jurassic: A period of time millions of years ago when many large dinosaurs lived.

Comprehension questions

  1. What two physical features is the adult Stegosaurus most famous for?

  2. How does the size of a newborn Stegosaurus compare to a common modern-day animal?

  3. Where did Stegosaurus mothers lay their eggs?

  4. How did the appearance of the back plates change as the dinosaur matured?

  5. What are two theories about how the plates were used by the Stegosaurus?

  6. What is the nickname for the four spikes at the end of a Stegosaurus's tail?

  7. In what way were the tail spikes of a baby different from those of an adult?

  8. What specific types of plants did the baby Stegosaurus eat to grow?

  9. Who do paleontologists believe helped protect the vulnerable hatchlings from predators?

  10. Approximately how much weight could a young Stegosaurus gain every year?

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Printables & worksheets

More ways to practice with this story — every sheet is built from the text itself, answer key included where it counts.

Get all 3 sheets as one workbook

One PDF with a cover, a contents page and every answer key at the back — color the page in, then keep going on paper.

fix the sentence

Sentences from the passage with the capitals and punctuation removed — rewrite each one correctly.

writing prompts

Two writing tasks that build on the passage, with plenty of lines to write on.

Free Printable Baby Stegosaurus Coloring Page for Kids

This free printable coloring page is specifically designed for upper elementary students to pair with our informative reading passage, "Life as a Baby Stegosaurus." By combining art with literacy, students can better visualize the Jurassic period while learning about the development of the Stegosaurus's famous plates and thagomizer spikes.

Whether you are a teacher looking for a classroom activity or a parent searching for educational at-home resources, this download provides a high-quality 2K image that is easy to print and fun to color. The clear outlines and open spaces are perfect for colored pencils, markers, or crayons, helping to develop fine motor skills alongside scientific knowledge.

Our educational coloring pages include reading comprehension opportunities and a glossary of terms like 'paleontologist' and 'thagomizer.' This holistic approach makes science more accessible and engaging, turning a simple coloring session into a comprehensive lesson about the life cycles of Earth's most famous ancient creatures.