Dinosaurs 3D

Each page renders a dinosaur as a live 3D model in the browser - drag to rotate it, scroll or pinch to zoom, toggle a person beside it to judge its true size, and click a body part to read the facts panel. The 3D engine loads once (about 0.7 MB) and is cached, and everything renders on your device with WebGL; nothing about your visit is sent to a server. The models are artistic reconstructions built from simple shapes; the lengths, weights, and dates shown are real published figures.

What these dinosaur viewers do

Every dinosaur here opens the same way: a model appears in a dark scene and turns slowly so you can see it from all sides. Drag with a mouse or finger to spin it yourself, use the wheel or a pinch to move closer, and the model keeps its proportions the whole time. There is no level to beat and no timer - the page exists to let you look at the animal and read what is known about it, at your own pace.

Four buttons sit under each scene. Auto-rotate starts and stops the slow turntable spin. Idle motion adds a gentle breathing and leg sway so the animal does not look frozen. Size vs human drops a 1.8 m figure beside the model at the correct scale, which is the fastest way to feel how large a Tyrannosaurus rex or a Mosasaurus really was. Fullscreen expands the scene while keeping the buttons in reach.

How to read the size comparison

The size toggle is scaled honestly. The human figure is set to about 1.8 m and the dinosaur is scaled to its real published length, so the gap you see on screen matches the gap you would see in life. A person would stand roughly hip-high to a T. rex and would be dwarfed by the length of a Mosasaurus. Where researchers disagree on a length or weight - which is common, because a complete skeleton is rare - the facts panel and the page text give a range rather than a single invented number.

Where the shapes and colors come from

Fossils preserve bone, and sometimes skin texture, but almost never color or soft tissue. That means the body shape of each model follows the reconstructed skeleton and muscle attachments, while the skin tone and pattern are an artist's choice within what is plausible. The pages say so plainly, and never claim a color or a fossil-accurate skeleton. The numbers - length, hip height, weight, the period it lived in, and when it was first described - are the real published values, drawn from museum and peer-reviewed sources and recorded so each figure can be traced.

Runs in your browser, no install

Unlike an app or an in-search augmented-reality view, these pages need no download and no camera permission, and they work on a laptop as well as a phone. The same WebGL engine that powers the space visualizations on this site draws the dinosaurs, and it is fetched once and then cached, so later visits start quickly. Marine reptiles such as Mosasaurus and, later, flying reptiles are included because people search for them alongside dinosaurs; each page states clearly when an animal was not actually a dinosaur.

Which animals you can view

The collection starts with two of the most-searched prehistoric animals and grows over time. Tyrannosaurus rex is the land predator most people picture first, and its page shows the heavy head, the balanced tail, and the famously short two-fingered arms. Mosasaurus is the giant ocean hunter from the end of the age of dinosaurs; its page floats a streamlined body with paddle flippers and a finned tail on a water surface, and it explains that this animal was a marine reptile rather than a dinosaur. As new pages are added, each one follows the same layout so you always know where the controls and the facts are, whether the animal walked, swam, or flew.

Good for classrooms, homework, and curiosity

Because every page shows the same controls and a plain facts table, the viewers work well for a quick look during a lesson, for a child comparing sizes, or for anyone settling an argument about how big a dinosaur really was. The size-versus-human toggle turns an abstract "twelve metres long" into something you can see at a glance, and the clickable body parts give a short, sourced note instead of a wall of text. Nothing needs to be installed on a school device, and no account or sign-in is asked for.

How accuracy is kept honest

Two rules keep the pages trustworthy. First, every measurement shown is a real published figure, and where experts disagree the page gives the range instead of choosing a number. Second, the pages never dress up a guess as a fact: the shape follows the fossil skeleton, but color and skin are described as an artistic reconstruction, and an animal that was not a dinosaur is labelled as such. That way the models stay fun to spin while the words stay true to what the fossils actually support.

• Tyrannosaurus rex 3D Viewer - Rotate T. rex in Your Browser

  View a Tyrannosaurus rex in 3D - rotate the model, size it against a person, and read its real length, weight, and age from fossils.

• Mosasaurus 3D Viewer - Rotate the Marine Reptile in Your Browser

  View a Mosasaurus in 3D - rotate the giant marine reptile, size it against a person, and read its real length, weight, and age.