Ogyginus corndensis corndensis, Ordovician trilobite fossil. Trilobites were arthropods that fed as they crawled on the seabed. They lived between 500 and 300 million years ago and are now extinct. This specimen dates from the Middle Ordovician, and was found in Wales in the Lower Llanvirn Series (arctus biozone), Old Tile Quarry, Upper Gilwern Hill, near Hundred House, Powys, UK.

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TOP26514424

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達志影像

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RM

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