The Cambrian was a time of expansion for the Earths more complex animal forms. Molluscs and arthropods or their friends with hard shells and exoskeletons dominated the seas. The photo is of a Wanneria dunnae from the Eager Formation, Rifle Range site near Cranbrook from a trip in 1990.
Cambrian Fossil Sites in Western Canada:
Tanglefoot and Eager Formation Trilobites, Mount Field Burgess Shale Soft-bodied marine critters and the fossils from the Mount Stephen Trilobite beds.