• ✓Bipedal, back horizontal, tail held straight out off the ground
• ✓Mouth closed, lips covering the teeth so none are visible
• ✓Palms facing each other, not turned down or danglingมือยกไปข้างหน้า กรงเล็บงอ ไม่ห้อยลง
• ✓Three weight-bearing toes on each foot
• ✓Skin mostly covered in small scales
• ✓Slimmer than T. rex, about 8–9 m long, short crest before each eye, short two-fingered armsมีสันสีแดงเล็กหน้าตา
• ✓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 31, 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 Gorgosaurus, a carnivore Tyrannosauridae dinosaur from the Campanian age of the Late Cretaceous (about 76.5–75 million years ago). Bipedal with the back held roughly horizontal and the tail held straight out behind for balance, never dragging on the ground. NOT standing upright like a kangaroo. Mouth closed with all teeth fully hidden behind scaly lips, like a monitor lizard. NO visible teeth. Hands held tucked in near the chest with the palms facing inward toward each other, like clapping, claws curving inward and forward. NOT hanging down, NOT palms-down, NOT claws pointing at the ground. Reference: Gorgosaurus is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous Period (Campanian), between about 76.5 and 73 million years ago. Fossil remains have been found in Western Canada as well as the U.S. state of Montana. Paleontologists recognize only the type species, G. libratus, although other species have been erroneously referred to the genus. Anatomy: three main weight-bearing toes on each foot; skin predominantly covered in small scales; a lighter, more slender build than Tyrannosaurus, about 8–9 meters long, a short bony crest in front of each eye, short two-fingered arms. Full body in side view, whole animal visible, standing in a Late Cretaceous coastal floodplain like the Dinosaur Park Formation of Alberta, with conifers, ferns and early flowering plants by a river, no grass. 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