三叶虫 - 动物化石 - Elrathia marjumi - 7 cm - 5 cm

Elrathia kingii in Utah, USA. There is a rare trilobite on the matrix. The details of the fossils are quite well preserved !

Elrathia marjumi — Rare Middle Cambrian Trilobite

Elrathia marjumi is a rare species of trilobite from the Middle Cambrian of western Utah, USA. It is known from the Pierson Cove Formation of Millard County, a Cambrian marine deposit approximately 520 million years old.

Formation: Wheeler Shale
Age: Cambrian
Location: Utah, USA
Size: 2.5 cm