Vermeulen 2004. [On a new classification based on phylogenetics of heteromorphic ammonites from the Mediteranean Lower Cretaceous. The case of Crioceratitidae Gill, 1871, nom. correct. Wright, 1952, Emericiceratidae fam. nov. et Acrioceratidae fam. nov. (Ancylocerataceae Gill, 1871).] Riviera Scientifique, 88, 28 decembre 2004: 69-92