GoniatitinaGoniatitina is one of two suborders included in the order Goniatitida; extinct Paleozoic ammonoid cephalopods only distantly related to the Nautiloidea.TaxonomyThe Goniatitina contains 17 defined superfamilies, listed below. Adrianitoidea Cycloloboidea Dimorphoceratoidea Gastrioceratoidea Goniatitoidea Gonioloboceratoidea Marathonitoidea Neodimorphoceratoidea Neoglyphioceratoidea Neoicoceratoidea Nomismoceratoidea Pericycloidea Popanoceratoidea Schistoceratoidea Shumarditoidea Somoholitoidea Thalassoceratoidea