Hello, here is A Huge! "for this species" VERY nice and 100% natural Elrathia Kingi Trilobite fossil in its Wheeler Shale formation matrix! It was quarried in Millard County, Utah on the House Range.
This "rock" was a living animal during the mid-Cambrian Era a CRAZY! 505 million years ago.
The Trilobite measures a nice! 4.01cm or 1 5/8" at its biggest or from the Cephalon... head to the Pygidium...its tail and the overall piece or matrix is a big! 15.0cm or 6" from opposing side to side!
Please note that it is WAY nicer in person as it is difficult to get all of the detail to show up in the photos.