Belongs within: Agoniatitina.Contains: Medlicottiidae. The Medlicottioidea were a group of ammonoids that originated in the Lower Carboniferous and survived to the end of the Permian, with a single genus Episageceras crossing the Permian-Triassic boundary (McGowan & Smith 2007). The medlicottioids are characterised by the development of bidentition in the sutural lobes (Korn 2003). The trifid… Continue reading Medlicottioidea