Pearl Pendant 1bbdc40285dbc0b56eda99b4881b1e6b Onchopristis are thought to have

Onchopristis are thought to have had electrosensors to detect prey swimming below them

Trilobites are extinct hard shelled marine arthropods with amazingly great diversity

Although Stingrays have eyes

and the surface iridescence and golden color results from inclusions of limonite

Pearl Pendant 1bbdc40285dbc0b56eda99b4881b1e6b Onchopristis are thought to havePearls are objects produced within the soft mantle of a mollusk. Like the shell of the mollusk, a pearl is composed of a microcrystalline calcium carbonate that is deposited in thin concentric layers. Pearls can occur spontaneously in nature, but the bulk of the worlds pearls are obtained through farming, or culturing, pearls from freshwater mollusks. Wild pearls, or pearls occurring without human intervention, are incredibly rare. Seeding a pearl