Drag to rotate the Triceratops, scroll or pinch to zoom, and click a body part - the frill, a horn, or a leg - to read what fossils tell us about it. The panel beside the model carries the real figures.
A Triceratops carried a solid bony frill at the back of its skull and three horns - a short one on the nose and two longer ones above the eyes - turn on the human figure to see how the whole animal, roughly the length of a school bus, compares to a person.
The colors and skin pattern here are an artistic reconstruction; fossils preserve bone, not soft tissue or color. The frill and horn proportions follow the fossil skeleton, but the measurements in the panel are the ones actually published.
Triceratops 3D Viewer
This page renders a Triceratops as a 3D model you can spin in the browser - drag to rotate, scroll or pinch to zoom, toggle a 1.8 m person beside it for scale, and click the frill, a horn, or a leg to read a fact about that part.
Triceratops lived in the Late Cretaceous, roughly 68 to 66 million years ago, in what is now western North America. Published length estimates put most adults at about 8 to 9 m, roughly the length of a school bus, with a weight commonly cited between about 5.4 and 10 metric tons depending on the source and specimen. A solid, relatively short bony frill extended from the back of the skull, framed by two brow horns around 1 m long each and a smaller horn on the snout. The skull itself could reach nearly 3 m long, among the largest of any land animal.
The genus was named in 1889 by American paleontologist Othniel Charles Marsh, based on a holotype skull collected in 1888 from the Lance Formation in Wyoming. Since then, dozens of skeletons have been recovered, including well-known specimens such as "Big John" - at about 8 m long, one of the largest and most complete Triceratops skeletons known - and "Lane", found with unusually well-preserved fossil skin impressions.
| Measure | Figure |
|---|---|
| Length | about 8-9 m (commonly cited range; some sources cite 6-8.5 m for the type species) |
| Shoulder height | roughly 3 m (individual specimens range about 2.3-3.8 m) |
| Weight | about 5.4-10 metric tons (range across sources) |
| When it lived | 68-66 million years ago (Late Cretaceous, Maastrichtian) |
| Diet | Herbivore |
Everything runs on your device with WebGL, so the model works without an account and without sending anything to a server. The skin tone and pattern are an artistic reconstruction, because fossils do not preserve color or soft tissue; the numbers above are real published values, and the length/weight range is shown because sources vary rather than because a single figure is invented.
New to the controls? See how to view Triceratops in 3D. For the numbers beside a person, see Triceratops size comparison. For trade-offs versus phone AR apps, see Triceratops 3D viewer vs AR apps.
Frequently Asked Questions
How big was a real Triceratops?
Most published estimates put an adult at about 8-9 m long and roughly 5.4-10 metric tons, with a shoulder height around 3 m - about the size of a school bus. Turn on the human figure in the viewer to see the true scale against a 1.8 m person.
What were the horns and frill for?
The two long brow horns and shorter nose horn likely served for defense and for fighting among Triceratops themselves. The solid bony frill was once thought to be purely protective, but many paleontologists now think it also helped individuals recognize their own species and signal to rivals or mates.
Is the model scientifically accurate?
The frill, horn, and body proportions follow the fossil skeleton, but the skin color and texture are an artistic reconstruction - fossils preserve bone, not soft tissue or color. The length, weight, and age figures shown are real published values.
When and where did Triceratops live?
In the Late Cretaceous, roughly 68 to 66 million years ago, in what is now western North America. The genus was named in 1889 by Othniel Charles Marsh from a skull collected in 1888 in Wyoming's Lance Formation.
Do I need to install anything to view it?
No. The model renders in your browser with WebGL - no app, no account, and nothing about your visit is sent to a server. The 3D engine loads once and is then cached.