• ✓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
• ✓Whole body covered in long, shaggy, hair-like feathers
• ✕Tall, thin bony crest along the middle of the snoutมีเพียงปุ่มเล็กบนหัวหลังตา ไม่ใช่หงอนสูงตามแนวจมูก
• ✓Large predator about 9–10 m long, long arms with three clawed fingers
• ✓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 Yutyrannus, a carnivore Proceratosauridae dinosaur from Barremian–Aptian times (125.77–119.57 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. The whole body covered in long, shaggy, hair-like filament feathers. A tall, thin bony crest along the midline of the top of the snout. Reference: Yutyrannus is a genus of proceratosaurid tyrannosauroid dinosaur which contains a single known species, Yutyrannus huali. This species lived during the early Cretaceous period in what is now northeastern China. Three fossils of Yutyrannus huali — all found in the rock beds of Liaoning Province — are the largest-known dinosaur specimens that preserve direct evidence of feathers. Anatomy: hands held with palms facing each other (not pronated, not palms-down, not dangling); three main weight-bearing toes on each foot; a large predator about 9–10 meters long with long arms ending in three clawed fingers. Full body in side view, whole animal visible, standing in a cool, temperate Early Cretaceous forest by a lake, like the Yixian Formation of Liaoning, China, with conifers, ginkgoes and ferns, 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