Wikipedia
Capriocornites
Capriocornites is a rutoceratid genus (Nautiloidea - Cephalopoda) from the Devonian, related to such genera as Rutoceras and Goldringia.
In some taxonomies (Manda & Turek, 2009) the Rutoceratidae are included in the Oncocerida rather than in the Nautilida