[1]
M. Howarth, “Treatise Online no. 128: Part L, Revised, Volume 3B, Chapter 2: Systematic Descriptions of the Jurassic and Cretaceous Phylloceratoidea, Boreophylloceratoidea, and Aequiloboidea”, TREON, Jan. 2020, doi: 10.17161/to.vi.13358.