Edmontosaurus Size Comparison
Edmontosaurus 3D Viewer pairs published Late Cretaceous figures with a 1.8 m person on screen - typical adults about 9-12 m (Size vs human uses 10 m), average mass about 5.6 tonnes - so the herd-scale duck-bill gap stays readable at a glance.
Edmontosaurus published figures
The Edmontosaurus facts panel and this table disclose published ranges rather than one invented single number; the Size vs human control uses 10 m as the length scale ratio:
| Measure | Figure | Vs a 1.8 m person |
|---|---|---|
| Length | typical adults about 9-12 m; Size vs human uses 10 m representative | ~5.6x a person end-to-end at the 10 m scale figure |
| Weight | average about 5.6 tonnes; exceptionally large individuals up to about 15 tonnes or more | shown as a published range, not one settled point |
| Head | broad toothless duck-bill beak; no bony cranial crest (feats empty) | contrast with shipped Parasaurolophus crest |
| Skin fossils | 1908 AMNH 5060 "Trachodon mummy"; 1999 "Dakota" specimen with extensive skin impressions | fact-panel differentiator, not a Size vs human input |
| When it lived | ~73-66 million years ago (Campanian-Maastrichtian), western North America; Lambe 1917 E. regalis; Marsh 1892 E. annectens (as Claosaurus) | final few million years before end-Cretaceous extinction |
How the Edmontosaurus size-vs-human toggle stays honest
The Edmontosaurus model is drawn to a fixed on-screen length so it fits the canvas; the Size vs human control then places a 1.8 m person at the true length ratio used by the viewer (10 m). Tap Size vs human under the canvas to show or hide the scale figure - the comparison is proportional, not a decorative sticker. Published adult length still spans about 9-12 m, so the toggle picks one clear mid-range scale inside that disclosed range.
What a person would see beside an Edmontosaurus
What a person would see is a crestless duck-billed hadrosaur - turn on the person in the viewer and orbit beside a hind leg to feel how the body sits relative to the scale figure versus the already-shipped crested Parasaurolophus. A license-clean CC-BY-SA 4.0 glTF may swap in after first paint; procedural skin color remains an artistic choice if the model load fails.
What the Edmontosaurus size numbers are not
What these size numbers are not is a claim of one precise length or weight: the Edmontosaurus size comparison discloses the about 9-12 m / ~5.6 t (up to ~15 t) figures and uses 10 m only for the Size vs human scale; it does not claim a bony crest, does not invent soft-tissue accuracy for the procedural body, and this is not a win/lose game. For the control walkthrough see how to view Edmontosaurus in 3D. For trade-offs versus phone AR apps see Edmontosaurus 3D viewer vs AR apps.
Other dinosaurs to compare
Other dinosaurs in the collection make useful size comparisons too: for the crested hadrosaur relative see the Parasaurolophus 3D Viewer, or for a common Late Cretaceous neighbor see the Triceratops 3D Viewer.
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