Abelisaurus 3D Viewer

This page renders Abelisaurus 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 skull, a short forelimb, or a hind leg to read a fact about that part. Nothing installs and nothing uploads.

How the controls behave

A tap counts as a part click only when the pointer barely moves, so a rotation drag never trips a fact note by accident - which matters most on a touch screen. Clicking empty canvas clears the part note and brings the full fact sheet back. The buttons below the scene go fullscreen, stop the auto-rotation, and add a gentle idle sway; each renames itself to Auto-rotate, Stand still, or Hide human, so it doubles as its own status readout. The camera glides rather than snaps, and zoom and vertical tilt stop at limits that prevent flipping the model over or clipping through the body. Fullscreen expands the whole viewer, not just the canvas, so the control row stays on screen.

While the scene loads, a status line reads Preparing the 3D scene and clears at the first frame. If a free-licensed detailed model is published for this species it swaps in a moment later without a page reload; otherwise the built-in procedural model stays. The 3D engine is a one-time 0.7 MB download the browser caches, so every later dinosaur viewer here starts from that cache.

What the scale figure tells you

The person is scaled from the same length the panel reports rather than dropped in at a fixed size, so the 1.8 m human stands against the body at an honest ratio. Because both share the scene you can spin them together and judge reach and standing height from any angle.

What is known about Abelisaurus

Abelisaurus is known from a partial skull from the Anacleto Formation of Argentina. Named by Bonaparte and Novas in 1985, it was the first abelisaurid to receive a formal name. Published length and mass estimates span a wide range, so the viewer poses the animal at mid-range values; the table below carries both the spans and the figures the panel reports. The body you see is inferred from close abelisaurid relatives, not from a complete Abelisaurus skeleton.

How the reconstruction is posed

A curved spine carries a shaped skull with a hinged, slightly open jaw and serrated teeth; the hind legs stand digitigrade on their toes and the forelimbs sit tucked and short, the way abelisaurids are known to have carried them. The silhouette follows how a running theropod is now reconstructed - back roughly level instead of reared upright, long tail held clear of the ground to counterbalance the body over the hips, neck curving up to carry the head forward - avoiding the older hunched, tail-dragging pose. Finer touches come from the same per-species spec: forward-facing eyes with sclera, colored iris, and pupil, a claw on each toe, and two on the short arm.

Measure	Figure
Length	about 7.2-11 m (panel ~7.4 m)
Weight	about 1.4-3 t (panel ~2 t)
When it lived	about 83-80 Mya (Late Cretaceous)
Diet	Carnivore
Fossil record	Partial skull only; body inferred from related abelisaurids

Where the rendering runs, and what is interpretive

Rendering runs on your device with WebGL and needs no account. The viewer drops antialiasing on a phone or low-core machine to keep the scene moving. If WebGL is switched off it says so in plain words and leaves the fact table above readable; if scripting is blocked, a short note explains that the 3D view needs JavaScript.

Fossils do not preserve color or soft tissue, so the skin tone and pattern are an artistic reconstruction rather than a fossil-accurate skeleton. Each part note draws its own line between preserved bone and informed estimate: the skull shape follows the bone while lips and color stay interpretive, the finger count on the short arm is what the fossil hand records, stance and speed read from limb-bone thickness plus preserved trackways, the neck's vertebra count and length come from the fossil while its held posture stays debated, and the torso is volume estimated from the rib and hip bones plus their muscle-attachment scars. When the swapped-in file is a real digitised specimen scan, the panel says so and marks the length, mass, and era figures as real published values.

Close abelisaurid relatives share the same deep, short skull and stubby forelimbs, yet each carried its own head ornament - paired brow horns on Carnotaurus, a single skull-roof horn on Majungasaurus - so the sibling viewers show noticeably different faces on a similar frame: the Carnotaurus 3D Viewer and the Majungasaurus 3D Viewer.

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