Here is a trilobite double with an Elrathia kingi and an agnostid of the species Itagnostus interstrictus. The Elrathia kingi measures about 17 mm, the Agnostus about 9 mm. | |||
Location: | Millard Co., Utah, USA | ||
Size Matrix: | about 73 x 62 mm | ||
Age: | Middle Cambriun, Wheeler Fm. (about 518 Mill. Y.) |