Fossil specimens of the trilobite *Elrathia kingii* from the Cambrian Wheeler Formation of Millard County, Utah (PRI 76837). Specimen is from the collections of the [Paleontological Research Institution](http://www.priweb.org), Ithaca, New York. Length of larger specimen is about 4 cm; length of smaller specimen is about 3 cm. Model by Emily Hauf.