How to View Brontotherium in 3D
Brontotherium 3D Viewer runs a Late Eocene North American brontothere mammal - not a dinosaur - length about 4.6 m, mass about 3.5 tonnes. Drag, zoom, toggle a 1.8 m person, and click a body region.
Open the Brontotherium page and take the camera
Open the Brontotherium 3D Viewer and wait for the facts panel to fill. When the status line says you can drag, orbit Brontotherium with the pointer and zoom with the scroll wheel or a two-finger pinch. Fullscreen expands the wrapper so the controls stay visible beside the scene. After first paint a license-clean CC-BY-SA 4.0 glTF may swap in automatically from the CDN; if that load fails the page stays on the procedural quadruped silhouette with zero regression.
Use the four Brontotherium controls under the canvas
Under the Brontotherium canvas, four controls handle view and scale:
- Fullscreen - fills the display while keeping the buttons visible
- Stop rotation / Auto-rotate - freezes or resumes auto-spin
- Idle motion - adds subtle body sway; tap again for Stand still
- Size vs human - shows a 1.8 m person at the honest panel length ratio used by the viewer (about 4.6 m)
Read the Brontotherium facts panel and click a body part
The Brontotherium facts panel lists length about 4.6-5 m (panel baseline 4.6 m; YPM VP 12048 mounted about 4.635 m including tail), shoulder height about 2.5 m, mass about 2-5 tonnes (panel baseline 3.5 tonnes / 3500 kg), the Late Eocene window about 38-34 million years ago in North America, herbivore diet, blunt Y-shaped nasal horns, and historical naming as Brontotherium with many specimens now placed in Megacerops. It is a brontothere mammal - not a dinosaur. A short click - not a drag - on a body region surfaces a short fossil fact. Soft-tissue color is an artistic reconstruction. When the CC-BY-SA 4.0 glTF by seth the yutyrannus via Printables loads, the status text notes a real model with that credit - a stylized reconstruction, not a laser scan. This model is not a fossil-accurate skeleton.
What the Brontotherium how-to guide is not
The Brontotherium how-to guide is a controls walkthrough for the in-browser viewer only - it does not call Brontotherium a dinosaur, it does not place the model in your room (no AR), it does not invent one precise mass beyond the disclosed about 2-5 tonnes range, it does not hide the Megacerops synonymy, it does not invent soft-tissue color accuracy, it does not invent game score or win states, and it does not claim the optional glTF is a scientifically exact reconstruction. For the size story see Brontotherium size comparison. For trade-offs versus phone AR apps see Brontotherium 3D viewer vs AR apps.
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