Olenoides superbus longispinus
Very nice example of one the the most famous US found trilobites from the Utah House range formation. The Olenoides superbus comes in 2 different subspecies with this long spines subspecies being the more rare variation. The trilobite was found in cross section.
Middle Cambrian (505 - 495 mil y)
House range, Millard County, Utah, USA
80 mm - 3.2"