CRINOIDS STARTED IN THE PALEOZOIC ERA, SILURIAN & DEVONIAN PERIODS (400-300 MYA). CRINOIDS, OR SEA LILIES, WERE ANIMALS THAT ATTACHED THEMSELVES TO THE SEA BOTTOM BY SEGMENTED STEMS. THEY HAD DIGESTIVE TRACKS IN THEIR FLOWER-LIKE HEADS FOR EATING FOOD CARRIED BY THE CURRENTS. THE FOOD WAS CAUGHT BY FEATHERY TENTACLES AROUND THE MOUTH. THERE ARE STILL FORMS OF CRINOIDS PRESENT IN THE DEEP TRENCHES OF THE OCEANS AND THEY ARE KNOWN AS THE "LIVING FOSSIL"!. MY SPECIMENS HAVE GOOD HEADS AND STALKS. THESE PLAQUES ARE SUITABLE FOR FRAMING AS WALL MOUNTS OR TO SHOW ON AN EASEL. FROM CHNA AND MOROCCO.