• ✓Bipedal, back horizontal, tail held straight out off the groundหลังขนานพื้น คอยาวชูขึ้น
• ✓Mouth closed, lips covering the teeth so none are visible
• ✓Palms facing each other, not turned down or danglingมือยกไปข้างหน้า นิ้วงอขึ้น ไม่ห้อย
• ✓Three weight-bearing toes on each foot
• ✓Small, very slender predator about 3 m long, long narrow pointed head, long S-curved neck
• ✓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 Coelophysis, a carnivore Coelophysidae dinosaur from the Late Triassic, Norian–Rhaetian (about 215–201 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 small, very slender, lightly built predator about 3 meters long with a long, narrow, pointed head and a long S-curved neck. Reference: Coelophysis is an extinct genus of coelophysid theropod dinosaurs that lived approximately 215 to 201.4 million years ago during the late Triassic period from the middle Norian to Rhaetian age in what is now the southwestern United States. Megapnosaurus was once considered to be a species within this genus, but this interpretation has been challenged and the genus Megapnosaurus is now considered valid. Anatomy: three main weight-bearing toes on each foot; arms with three clawed fingers. Full body in side view, whole animal visible, standing in a Late Triassic river floodplain like the Chinle Formation of New Mexico, with tall conifers, ferns and horsetails, no grass and no flowering plants. 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