Meet Pikaia gracilens, the humble wormlike swimmer from the Cambrian seas (~505 million years ago) that may just be one of your oldest relatives.nAt about 5 cm long, it didn’t look like much—just a slender, ribbon-bodied creature wriggling through the Burgess Shale ecosystem. But Pikaia had something revolutionary: a notochord, the flexible rod that would eventually evolve into a backbone. That makes this little swimmer a crucial early chapter in vertebrate history—an ancestor that set the stage for everything from goldfish to giraffes (and, yes, humans).nThis hard enamel pin captures its simple but historic form in polished metal and enamel—no time machine or shale slab required.nSpecs:nnPremium metal base with polished hard enamel fillnSecure clasp so your Pikaia doesn’t “wriggle off”nSize: 43 x 23mmnZero chance of evolving into something that steals your snacksnnPerfect for Cambrian-life nerds, evolutionary biology fans, and anyone who wants to wear their deep ancestry with pride.