Sun variant: rays as radiating bolted I-beam girders. The real Mamenchisaurus (say it mah-MEN-chih-SORE-us) lived in the Late Jurassic — its neck could reach half its total body length — the longest neck-to-body ratio known. Drawn as clean flat vector shapes in a fixed six-ink palette, mid-century poster style; edges stay razor sharp even at the six-inch size. Cut to the silhouette on matte laminated vinyl: 3-inch fits a phone or bottle, 4-inch a laptop lid, 6-inch a notebook, cooler or wall.