Abstract: Twelve Devonian and Carboniferous cephalopods from the eastern Anti-Atlas (Morocco)
  with epizoa and post-mortem epicoles are described.  Overgrowth of auloporoid encrustations on
  the conchs of some late Emsian ammonoids indicates occasional syn-vivo infestation of these
  cephalopods.  In contrast, the Arrangement of approximately 60 Serpularia tubes on the conch of a
  Carboniferous orthoconic cephalopod implicates a post-mortem encrustation.  For the first time,
  post-mortem overgrowth by a cystoid (Eucystis sp.) of a Devonian ammonoid is described.
  Keywords: Cephalopoda, Epizoa, Devonian, Carboniferous, Tafilalt, Ma'der, Morocco