This is a beautiful fossil phyllocarid of the species Dithyrocaris rolfei that was collected from the Bear Gulch limestone of Fergus County, Montana. The crustacean itself is 2.1" long and preserved with excellent detail. The base of the limestone has been cut flat.
Comes with an acrylic display stand.
Phyllocarids are a type of arthropod that developed during the Cambrian. They had a hard protective shell, hinged carapace, and were thought to have a lifestyle similar to shrimp. Exactly how they fit into the arthropod taxonomy is still under debate, with it being proposed to represent a stem-lineage euarthropod or a primitive branchiopod crustacean.