Middle Cambrian

Stephens Formation, Burgess Shale

Field, British Columbia, BC, Canada

14mm trilobite (negative) and 62mm sponge on 91mm slab (23)

Trilobite, Burgess Shale.

Oryctocephalus is the one of the earliest trilobites of the Order Corynexochida.  It is also known from the Middle Cambrian of China.

An unusual piece for a Burgess Shale collector or those who like fossil associations.