Red Crinoid Fossil Sphere

We have two stunning Crinoid Fossil Spheres available. These spheres has awesome patterns and colives. Crinoids are some of the Earth's earliest animals that once carpeted the ocean floor, swaying with the currents. Crinoids came close to extinction toward the end of the Permian Period, about 252 million years ago. Approximately 625 species of crinoids still survive today, they are the descendants of the crinoids which survived the mass extinction. Crinoids are echinoderms related to starfish, sea urchins, and brittle stars.