5.1" Huge, Kierarges Trilobites - Fezouata Formation

This is a huge, 5.1" example of a fairly rare Asaphid trilobite from the Fezouata Formation, Kierarges morrisoni (Corbacho, 2014). It does not have a lot of definition with most the border preserved as a red iron oxide. It has been etched around with an airscribe to bring it out in higher definition aground the rock.

Kierarges morrisoni: Un nuevo género de Isotelinae (Trilobita) del Floiense de Portugal y Marruecos