Stalk-Eyed Asaphus Intermedius Trilobite

Matrix size: 3" x 1.25" x 2" approx.

Specimen size: 2.25" x 1.25" approx.

Trilobite, any member of a group of extinct fossil arthropods easily recognized by their distinctive three-lobed, three-segmented form. Trilobites, exclusively marine animals, first appeared at the beginning of the Cambrian Period, about 542 million years ago, when they dominated the seas.