Parasaurolophus Size Comparison
Parasaurolophus 3D Viewer pairs published crested hadrosaur figures with a 1.8 m person on screen - length about 7.5 m to over 9 m (some sources to about 11 m), standing height about 4.4-5.6 m, and weight about 2.6 to more than 5 tonnes - so the scale gap stays readable at a glance.
Parasaurolophus published figures
The Parasaurolophus facts panel and this table disclose the wide cross-source ranges rather than one invented single number; the Size vs human control uses about 9.5 m as the model length ratio:
| Measure | Figure | Vs a 1.8 m person |
|---|---|---|
| Length | about 7.5 m to over 9 m; some sources cite up to about 11 m; Size vs human uses about 9.5 m | ~5.3x a person end-to-end at the 9.5 m scale figure |
| Standing height | about 4.4-5.6 m | ~2.4x to ~3.1x adult standing height |
| Weight | about 2.6 to more than 5 tonnes (low estimates sometimes about 2.7-3.6 t) | no single complete skeleton settles one mass across all three recognized species |
| When it lived | 76.5-73 million years ago | Late Cretaceous (Campanian), western North America; William Parks named the genus in 1922 from a 1920 find near the Red Deer River, Alberta (type specimen ROM 768) |
How the Parasaurolophus size-vs-human toggle stays honest
The Parasaurolophus 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 (about 9.5 m). Tap Size vs human under the canvas to show or hide the scale figure - the comparison is proportional, not a decorative sticker. Published length still spans about 7.5 m to over 9 m (some sources to about 11 m), so the toggle picks one clear scale inside that disclosed range.
What a person would see beside a Parasaurolophus
What a person would see is a bipedal duck-billed herbivore whose standing height (about 4.4-5.6 m) towers well above a 1.8 m adult, with a long hollow head crest formed by nasal passages. From snout to tail the animal spans roughly several person-lengths at the about 9.5 m scale figure - turn on the person in the viewer and orbit beside a hind leg to feel how the crest and bipedal body sit relative to the scale figure. Skin and crest surface color are an artistic reconstruction, not a fossil-accurate skeleton.
What the Parasaurolophus size numbers are not
What these size numbers are not is a claim of one precise length or weight: the Parasaurolophus size comparison discloses the wide literature range and uses about 9.5 m only for the Size vs human scale; crest function stays debated (resonance, recognition, heat regulation), no free-licensed Parasaurolophus glTF is re-hosted yet so the viewer stays procedural, and this is not a win/lose game. For the control walkthrough see how to view Parasaurolophus in 3D. For trade-offs versus phone AR apps see Parasaurolophus 3D viewer vs AR apps.
Other dinosaurs to compare
Other dinosaurs in the collection make useful size comparisons too: Parasaurolophus is a crested duck-billed herbivore, so for a horned quadruped herbivore see the Triceratops 3D Viewer, or for an armored club-tailed herbivore see the Ankylosaurus 3D Viewer.
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