Here is a nice piece from the Wheeler Shale of Utah with 1 and 1/3 specimens of Elrathia kingii. The incomplete specimen shows how different the quality of preservation can be in the wheeler shale, even on small dimensions. | |||
Location: | Millard Co., Utah, USA | ||
Size trilobite: | about 29 mm long | ||
Age: | Middle Cambriun, Wheeler Fm. (about 518 Mill. Y.) |