Sea Star
Ophidiasteridae
Ophidiasteridae
Ophidiasteridae
Ophidiasteridae
Ophidiasteridae
Asteriidae
Semicassis bisulcata
Sulfide Mineral Covellite
Sulfosalt Mineral Tennantite
Oxide Mineral Corundum
Hydrotungstite
Hydroxide Mineral Brucite
Hydroxide Mineral Gibbsite