• ✓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 danglingHands dangle with claws pointing down
• ✓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 armsมีสันเล็กหน้าตา รูปร่างเพรียวกว่า T. rex
• ✓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 Albertosaurus, a carnivore Tyrannosauridae dinosaur from the early Maastrichtian age of the Late Cretaceous (about 71 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: Albertosaurus is a genus of large tyrannosaurid dinosaur that lived in northwestern North America during the Latest Campanian to middle Maastrichtian age of the Late Cretaceous period, about 71 million years ago. The type species, A. sarcophagus, was apparently restricted in range to the modern-day Canadian province of Alberta, after which the genus is named, although an indeterminate species has been discovered in the Corral de Enmedio and Packard Formations of Mexico. Scientists disagree on the content of the genus and some recognize Gorgosaurus libratus as a second species. 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 humid Late Cretaceous coastal floodplain like the Horseshoe Canyon Formation of Alberta, with conifers, ferns, early flowering plants and swamps, 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