• ✓Quadrupedal, hind legs longer than front, back highest over the hips, small low head, tail off the ground
• ✓Two alternating rows of upright kite-shaped plates along neck, back and tailPlates are a little more rounded than kite-shaped
• ✓Four long tail spikes pointing outward and backward
• ✓Small, narrow head with a beak at the front
• ✓Whole animal visible in side view
• ✓Scene matches the period and the fossil site
• ✓No text, people or modern objects

Checked by Claude Opus 5.5 (checked item by item from the image) on Oct 28, 2026. The score is the share of checklist items the image gets right; it is not an expert scientific review.

Prompt used to create the image

Scientifically accurate paleoart of Stegosaurus, a herbivore Stegosauridae dinosaur from the Late Jurassic, Kimmeridgian–Tithonian (about 155–145 million years ago). Quadrupedal with the hind legs much longer than the front legs, so the back arches highest over the hips, small head held low near the ground, tail held off the ground. Two alternating rows of large, flat, kite-shaped bony plates standing upright along the neck, back and tail. Reference: Stegosaurus is a genus of extinct herbivorous four-legged armored dinosaurs from the Late Jurassic, characterized by the distinctive kite-shaped upright plates along their backs and spikes on their tails. Fossils of the genus have been found in the western United States and in Portugal, where they are found in Kimmeridgian- to Tithonian-aged strata, dating to between 155 and 145 million years ago. Of the species that have been classified in the upper Morrison Formation of the western US, only three are universally recognized: S. stenops, S. ungulatus and S. sulcatus. Anatomy: four long bony spikes at the end of the tail pointing outward and backward; a small, narrow head with a toothless beak at the front. Full body in side view, whole animal visible, standing in a semi-arid Late Jurassic floodplain like the Morrison Formation of western North America, with conifers, cycads, ginkgoes, tree ferns and ferns along a river, no grass and no flowering plants. Natural history museum illustration style, realistic textures and natural daylight, muted natural colors. No text, no labels, no humans, no modern objects.

Facts in the prompt come from Wikipedia (en) and Paleobiology Database