RARE Gravicalymene Trilobite

Description: Trilobites of the genus Gravicalymene have been previously assigned to Flexicalymene, Claymene and Stenocalymene. This species was first described in 1926 (the specific name refers to its pustulose exoskeleton), and since then has primarily been known only from fragmented specimens. The few fully-articulated specimens often command a high price (see my other offerings for a fine multiple). Here is a unique opportunity to have a plaque which displays a fine prone example, as well as an additional cephalon. This would make a fine addition to any collection, whether individual or institutional.