Description of Kettneraspis? prescheri sp. nov. (Trilobita, Odontopleuridae) from the "couche rouge" (Pragian, Lower Devonian) in Morocco.

Kettneraspis? prescheri sp. nov. is described from the Ihandar Formation at Jbel Issoumour, SE Morocco. Relationships of the morphologically similar Kettneraspis Prantl & Přibyl and Leonaspis Richter & Richter are discussed. Previous diagnoses in the literature are no longer considered to be valid. [ABSTRACT FROM AUTHOR]