Cretaceous Period- C. 70 Million Years Ago

Order to which the fossil belongs: Decapoda
Name of which the family belongs: Nephropidae

This nice example of a Palaeonephrops browni lobster found within the Bearpaw Shale of Montana, within a limestone concretion.

Although repaired it has nice definition.

Matrix: 71mm x 137mm length
Lobster: 117mm length