Ichthyosaurus Size Comparison
Ichthyosaurus 3D Viewer pairs published Early Jurassic figures with a 1.8 m person on screen - genus length about 1-3.3 m (Size vs human uses 2 m), weight about 90 kg for a roughly 2 m individual - so the small marine scale stays readable at a glance.
Ichthyosaurus published figures
The Ichthyosaurus facts panel and this table disclose published ranges rather than one invented single number; the Size vs human control uses 2 m as the length scale ratio:
| Measure | Figure | Vs a 1.8 m person |
|---|---|---|
| Length | genus about 1-3.3 m (Britannica up to about 3 m / 10 ft); Size vs human uses 2 m representative mid-range | ~1.1x a person end-to-end at the 2 m scale figure |
| Weight | about 90 kg for a roughly 2 m individual; varies by species and growth stage | shown as size-tied approximate, not one settled point |
| Body plan | dolphin-shaped torso; dorsal fin; crescent tail fluke; four paddle flippers; conical teeth | distinct from Plesiosaurus (long neck, no fluke) and Mosasaurus (much larger, no dorsal fin modeled) |
| Live birth | viviparous at sea, often tail-first - fossil-documented, not egg-laying on land | fact-panel trait, not a Size vs human input |
| When it lived | ~199-175 million years ago (Early Jurassic); Anning ~1811-1812; Konig 1818; De la Beche & Conybeare 1821; Ichthyosauria (not a dinosaur) | same era window as shipped Plesiosaurus; different marine-reptile lineage |
How the Ichthyosaurus size-vs-human toggle stays honest
The Ichthyosaurus 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 (2 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 1-3.3 m across the genus, so the toggle picks one clear mid-range scale inside that disclosed range.
What a person would see beside an Ichthyosaurus
What a person would see is a dolphin-shaped marine reptile - not a dinosaur - with a dorsal fin and crescent tail fluke, far smaller than the already-shipped Mosasaurus; turn on the person in the viewer and orbit beside a flipper to feel how compact the silhouette sits relative to the scale figure. 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 Ichthyosaurus size numbers are not
What these size numbers are not is a claim of one precise length or weight: the Ichthyosaurus size comparison discloses the about 1-3.3 m genus range and ~90 kg-at-2 m figure and uses 2 m only for the Size vs human scale; it does not claim Ichthyosaurus was a dinosaur, 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 Ichthyosaurus in 3D. For trade-offs versus phone AR apps see Ichthyosaurus 3D viewer vs AR apps.
Other animals to compare
Other animals in the collection make useful size comparisons too: for the long-neck Early Jurassic marine reptile see the Plesiosaurus 3D Viewer, or for the much larger Late Cretaceous marine reptile see the Mosasaurus 3D Viewer.
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