Helicoprion Tooth Whorl - embroidered hat birding Featuring illustrations by Aaron John

Featuring illustrations by Aaron John Gregory and crafted by Cuppafog

And speaking of cousins

Four-color design on the back

This one is depicted chasing down a common chunky

this book will inspire readers to think again about these animals

Helicoprion Tooth Whorl - embroidered hat birding Featuring illustrations by Aaron JohnEmbroidered Helicoprion Tooth Whorl graphic on a high quality, Snapback trucker cap. Four different color ways to choose from! The mysterious fossil tooth whorl that we now know to be the lower, buzz saw shaped jaw of the Permian era shark, Helicoprion, perplexed Paleontologists for decades. But there's no confusion about what an amazing design it makes for a lovely trucker hat!