• ✓Body horizontal, head low at hip height, tail straight in line with the back
• ✓Mouth closed, lips covering the teeth so none are visible
• ✓Palms facing each other, not turned down or dangling
• ✓Long, low, narrow snout, not a beak or rounded bird head
• ✕Short S-curved neck, not a long ostrich neckNeck long and fairly straight, not short and S-curved
• ✓Arms folded at the sides with wing feathers and visible clawed fingers
• ✓Stiff, straight tail fringed with feathers and fanned at the tip
• ✓Visible, proportionate sickle claw on the second toe, held off the ground
• ✓Feathered body, about 5.5 m long including the tail
• ✓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 Dakotaraptor, a carnivore Dromaeosauridae dinosaur from Maastrichtian times (72.2–66 million years ago). Walking with the whole body held horizontal and balanced over the hips like a seesaw, back parallel to the ground, head held low and forward at the same height as the hips, short neck curving forward rather than upward, long stiff tail extended straight back in line with the back. NOT standing upright, NOT a raised head, NOT an ostrich or kangaroo posture. 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: Dakotaraptor is a genus of maniraptoriform theropod dinosaur that lived in western North America during the Late Cretaceous period. The remains have been found in the Maastrichtian-aged Hell Creek Formation, dated to the very end of the Mesozoic era, making Dakotaraptor potentially one of the last surviving dromaeosaurids, though other researchers have disputed its classification. One of the largest dromaeosaurids, measuring 4.35–6 m (14.3–19.7 ft) and weighing 220–350 kg (490–770 lb), the remains of D. steini were discovered in a multi-species bonebed. Anatomy: a long, low, narrow snout with a slightly upturned profile, NOT a bird beak and NOT a rounded bird head; a short S-curved neck about as long as the skull, NOT a long ostrich neck; clearly visible arms folded at the sides of the body like a bird's wings, with long pennaceous feathers attached along the forearm and hand, and three separate clawed fingers visible at the end of each hand; a stiff, straight tail fringed with feathers along its sides and a fan of feathers at the tip; each foot has a clearly visible sickle-shaped claw on the second toe, retracted and held off the ground, proportionate in size and attached to the toe; body covered in short feathers, about 5.5 meters long including the tail. Full body in side view, whole animal visible, standing in a humid latest-Cretaceous floodplain forest like the Hell Creek Formation of North America, with conifers, ferns and early flowering trees and shrubs, 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