• ✓Bipedal, back horizontal, tail held straight out off the ground
• ✕Mouth closed, lips covering the teeth so none are visibleTeeth clearly visible along the whole jaw
• ✓Palms facing each other, not turned down or danglingArms are small and hard to see
• ✓Three weight-bearing toes on each foot
• ✓Skin mostly covered in small scales
• ✓Massive deep skull, short two-fingered arms, powerful hind legs
• ✓Whole animal visible in side view
• ✓Scene matches the period and the fossil siteSome flowers look like modern plants
• ✓No text, people or modern objects

Checked by Claude Opus 5.5 (checked item by item from the image) on Oct 27, 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 Tyrannosaurus, a carnivore Tyrannosauridae dinosaur from Campanian–Maastrichtian times (83.6–66 million years ago). Reference: Tyrannosaurus is a genus of large theropod dinosaur. The type species Tyrannosaurus rex, often shortened to T. rex or colloquially T-Rex, is one of the best represented theropods. It lived throughout what is now western North America, on what was then an island continent known as Laramidia. Anatomy: bipedal with the back held roughly horizontal and the tail held straight out behind for balance, never dragging on the ground; hands with palms facing each other (not pronated), three-toed feet; lips covering the teeth when the mouth is closed; skin predominantly covered in small scales, massive deep skull, short two-fingered arms, powerful hind legs. Full body in side view, whole animal visible, standing in a Late Cretaceous landscape with conifers, ferns and early flowering plants, no grass lawns. 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