Fine Weeks Trilobite Duo from Cambrian Utah

Description: This plaque displays 2 examples of trilobites of the Order Ptychopariida. The larger example is Modocia weeksensis (once called M. hewlisca). They are typically found missing the genals, and as such are mostly molts (see my other offerings for a fine complete example). The complete trilobite is a member of the family Cedariidae known as Cedaria minor. It is a fine, well-inflated example with tightly-attached genals that would make a fine addition to any trilobite collection. Overall, we have a fine examples of 2 trilobites from the same order of disparate morphology.