Stegosaurus Size Comparison
Stegosaurus 3D Viewer pairs published plated figures with a 1.8 m person on screen - length about 9 m, hip height about 2.5 m, and weight about 3.5-5 tonnes for large adults - so the plate-backed scale gap stays readable at a glance.
Stegosaurus published figures
The Stegosaurus facts panel and this table use the same real published measures (a range where sources disagree):
| Measure | Figure | Vs a 1.8 m person |
|---|---|---|
| Length | about 9 m (NHM); related adult figures often about 6.5-9 m | ~5x a person end-to-end at the 9 m figure |
| Hip height | about 2.5 m (plates rise taller) | ~1.4x adult standing height; model uses this for Size vs human |
| Weight | about 3.5-5 tonnes for large adults; Sophie (NHM young adult) about 1.6 tonnes | adult mass shown as a range, not a single invented midpoint |
| When it lived | 152-145 million years ago | Late Jurassic; herbivore; genus Marsh 1877; S. stenops 1887, Colorado |
How the Stegosaurus size-vs-human toggle stays honest
The Stegosaurus 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-to-hip-height ratio for the about 9 m figure (hip height about 2.5 m). Tap Size vs human under the canvas to show or hide the scale figure - the comparison is proportional, not a decorative sticker.
What a person would see beside a Stegosaurus
At about 2.5 m at the hip, a Stegosaurus hip line sits well above a 1.8 m person's head, and the kite-shaped back plates rise taller still. From snout to spiked thagomizer the animal spans about 9 m - turn on the person in the viewer and orbit beside a hind leg to feel how the plated back towers past the scale figure.
What the Stegosaurus size numbers are not
The Stegosaurus size comparison uses published estimates with an honest adult mass range; skin and color are an artistic reconstruction, and plate or thagomizer function (display, defense, thermoregulation) is not settled as one use on the viewer page. For the control walkthrough see how to view Stegosaurus in 3D. For trade-offs versus phone AR apps see Stegosaurus 3D viewer vs AR apps.
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