Spondylus americanus Hermann 1781 Gorgeous Superb Long spines! F+++ 120 mm. Including the spines. Body size 75 mm. Very beautiful. Upper and lower valve white color with pale orange umbo, attractive almost perfect very long spines and rays of small sharp body spines in upper and lower valve. Has small worm drills on lower valve and chipped some small body spines doesn't detract from it's overall beauty. From my personal collection. Dived at 10-20 m. Palm Beach, Florida 1974