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The very first bone excavated was a shoulder blade about 2.4 metres long — taller than an adult human.
129 dinosaurs · three periods · 186 million years
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💡Did you know... — Daemonosaurus — The species name chauliodus refers to the enlarged, forward-slanting teeth at the tip of the snout.
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Supersaurus
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The species name harrisonii honours James Harrison, who found the first bones at Charmouth in 1858.
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The name Eodromaeus means roughly "dawn runner", a nod to its place at the very beginning of dinosaur history.
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The name Supersaurus simply means "super lizard", and the species name vivianae honours fossil collector Vivian Jones.
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At around 5–5.5 metres it was one of the largest known predatory dinosaurs of the Triassic.
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Facts that spark curiosity
We combine science and storytelling to inspire the next generation of explorers — and everyone who loves dinosaurs.
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Dinosaur facts for the whole family — from the Triassic to the Cretaceous
Dinofacts collects facts, images and stories about the dinosaurs of the Triassic, Jurassic and Cretaceous. The site is made for curious children, teenagers and adults who want to know how dinosaurs really lived.
Combine the dinosaur cards with quizzes and guides for a complete learning journey where facts meet stories.
Frequently asked questions
How do we know what dinosaurs looked like?
From fossils. Skeletons, skin impressions, eggs and footprints show size, body shape and how dinosaurs moved. Comparisons with living relatives such as birds and crocodiles fill in the rest.
Did all dinosaurs live at the same time?
No. The age of dinosaurs lasted more than 160 million years. Stegosaurus was long extinct before Tyrannosaurus was born — which is why every page shows the period a species belonged to.
Are the facts on Dinofacts reviewed?
Yes. Every entry is based on published research and museum collections, and uncertain estimates are flagged rather than presented as settled.
From the guides
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What happened to the dinosaurs? The story has survivors
An asteroid changed Earth 66 million years ago. Follow the evidence, explore the food-web problem, and meet the dinosaurs still here.
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Think like a fossil detective
A tooth, a footprint and a patch of skin can answer different questions. Learn to separate a real clue from a good guess.
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How big were dinosaurs? Ask three different questions
Longest, tallest and heaviest are different records. Learn how to compare dinosaur sizes without being fooled by a picture.