• ✓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 danglingHand turned palm-down, palms not facing each other
• ✓Three weight-bearing toes on each foot
• ✓Long, low, narrow skull, not broad and deep like T. rex
• ✓About 10 m long, short three-fingered arms, small scales
• ✓Whole animal visible in side view
• ✓Scene matches the period and the fossil site
• ✓No text, people or modern objects

Checked by Claude (AI) on Nov 3, 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 Meraxes, a carnivore Carcharodontosauridae dinosaur from Albian times (110.1–106.3 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. A long, low, narrow skull with blade-like teeth, NOT the broad deep skull of Tyrannosaurus. Reference: Meraxes is a genus of large carcharodontosaurid theropod dinosaur from the Early Cretaceous Huincul Formation of Patagonia, Argentina. The genus contains a single species, Meraxes gigas. Anatomy: three main weight-bearing toes on each foot; an animal about 10 meters long, short arms with three clawed fingers, powerful hind legs, skin of small scales. Full body in side view, whole animal visible, standing in an Early Cretaceous landscape with conifers, cycads, ferns and rare early flowering plants, 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