A co-occurrence of the clymeniid Postclymenia evoluta Schmidt, 1924 and the goniatite
 Acutimitoceras hilarum Korn, 2002 is reported from the Anti-Atlas of Morocco.  Both
 species occur in the same limestone horizon within the Acutimitoceras prorsum Zone,
 that has yielded an exclusive conodont fauna of the Upper praesulcata Zone (latest
 Devonian, above the Hangenberg Black Shale).  This record is firm evidence that some
 clymeniids survived the global Hangenberg Event, but soon later became extinct
 without descendants.