Paleontology's favorite correction, set as a museum plate: NOT A DINOSAUR. This Dimetrodon stands in side view in cream engraved line work edged in amber, jaw open on a long fang among smaller teeth (the name means "two measures of teeth"). Its sail is fine spines under a scalloped amber edge, with the dark shirt filling the membrane. The caption backs it up: a Permian synapsid from roughly 295 to 272 million years ago, closer to you than it is to T. rex. Made from lightweight 100% ring-spun cotton with a soft, sensory-friendly feel. Every order funds kelp restoration on the Pacific Northwest coast.