This is the same museum-mount idea as the 3D version, flattened to a side view so every bone stays readable without an orbiting camera: disarticulated bones drift toward their correct position and orientation in the mounted skeleton, easing in like a time-lapse of a fossil preparator's bench.
The two skeletons show different body plans. Tyrannosaurus was bipedal — it balanced its heavy skull over the hips using a long, stiff, counterbalancing tail, and its forelimbs shrank to tiny two-fingered arms no longer used for locomotion. Triceratops was quadrupedal, carrying its huge frilled skull on all fours, with the brow horns and nasal horn (plus the bony frill) mounted directly on the skull rather than being separate bones.
- Assembly speed — how fast bones travel from scattered to mounted (and back).
- Assemble — toggle between the mounted skeleton and a scattered pile of bones.
- Show labels — keep every major bone's name on screen instead of only on click.
- Click a bone — names it and gives a one-line anatomy fact.