Trigonulina ornata, commonly known as the "'Ornate verticord", is a carnivorous bivalve in the family Verticordiidae. It is native to coastal waters throughout the western Atlantic Ocean at depths of 18-850 meters below the surface. It has 8-11 prominent ribs on its surface and can be a maximum of 5.6 millimeters in size, though on average ranges from 1-3.6 millimeters.

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