Description
An exceptional cluster of 5 Zacanthoides alatus trilobites from the Middle Cambrian Metaline Formation of Washington State. Single examples of this species are difficult to obtain, with clusters being extremely rare. The largest example on this plate measures 2 cm. The trilobites exhibit the metamorphosis of the Metaline Formation showing stretching and elongation of its included fossils. The specimens have retained a thin black cuticle and are well preserved.
Age: Middle Cambrian
Species Name: Zacanthoides alatus
Order / Family: Corynexochida / Zacanthoididae
Locality: Pend Oreille County, Washington
Formation:Â Metaline Formation
