Sandworm skeleton consisting only of the rib cage and skull, elongated curved spine implied by rib alignment, large arched ribs forming a tunnel-like structure, massive skull and worn bone texture, no flesh, no skin, no spine segments beyond ribs, ancient and eroded look, asymmetrical broken bones, readable silhouette, single standalone skeletal structure, suitable for desert environment, game-ready 3D asset, no scene, no lighting, no effects

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