Approximately 2.5"

Phacops is a genus of ancient aquatic arthropods called trilobites, and their fossils are commonly found in Silurian and Devonian rocks—dating back around 359 to 444 million years ago—mainly in Europe and North America. These prehistoric sea creatures were bottom-dwellers and are distant relatives of today’s horseshoe crabs. Thanks to their hard, segmented exoskeletons, they could roll up just like modern-day roly-polies.

One of the most distinctive features of Phacops is its large, well-developed compound eyes made up of many tiny lenses. These gave it excellent vision, which was likely helpful for spotting predators or prey. On these fossils, you can see the textured remains of these unique compound eyes. It’s probably one of our favorite things about them. These detailed little buddies are full of surprises though and each time you look at them, you’ll find something new to marvel at. We sure do. 

Phacops rana is a specific species of trilobite within the genus Phacops. Fossils of this species are especially common in places like New York, Pennsylvania, and Ohio. In fact, Phacops rana is so iconic in that region that it’s the state fossil of Pennsylvania.

This is a unique, 100% Authentic one of a kind, fossil. Once this item is sold, we will not be about to acquire an exact replacement. All Paxton Gate specimens are guaranteed to be of the highest quality; sourced from ethical vendors and private collectors around the world.