After Clarkson, 1998 [based on House, 1988], Nied´zwiedzki, Salamon & Boczarowski, 2001, Hsiung, 2002- [“Les Fossiles”] and Work & Boardman, 2003

This is not for a long way a perfect presentation of diversity and sheer numbers of Goniatitid taxons. If any one has additional material and phylogeny and species... Please contact me... I simply don't have time to cypher out all of them... :-[

<==o †Goniatitida Hyatt, 1884
   |?- †Imitoceras
   |?- †Sporadoceras
   |--o †Tornoceratina
   |  |-- †Cheiloceras
   |  |-- †Gattendorfia
   |  `--o †Tornoceratoidea [Tornocerataceae]
   |     `-- †Tornoceras
   `--o †Goniatitina Hyatt, 1884
      |?- †Goniatites
      |?- †Eumorphoceras
      |?- †Gastrioceras
      |?- †Gleboceras mirandum Ruzhencev, 1950
      |?- †Mapesites chautauquaensis Work & Boardman, 2003
      |-- †Cheiloceratoidea [Cheilocerataceae]
      |-- †Karagandoceratoidea [Karagandocerataceae]
      `==o †Pericycloidea [Pericyclaceae]
         |-- †Nomismoceceratoidea [Nomismocecerataceae]
         `==o †Goniatitoidea [Goniatitaceae]
            `==o †Neoclyphioceratoidea [Neoclyphiocerataceae]
               |--o †Neodimorphoceratoidea [Neodimorphocerataceae]
               |  `-- Neodimorphoceras texanum (Smit, 1903)

               |?- †Gonioloboceratoidea [Goniolobocerataceae]
               `==o †Gastrioceratoidea [Gastriocerataceae]
                  |--o †Thalassoceratoidea [Thalassocerataceae]
                  |  `-- †Thalassoceratidae Hyatt, 1900
                  |-- †Schistoceratoidea [Schistocerataceae]
                  |-- †Adrianitoidea [Adrianitaceae]
                  |-- †Shumarditoidea [Shumarditaceae]
                  `==o †Neoiceratoidea [Neoicerataceae]
                     |--o †Popanoceratoidea [Popanocerataceae]
                     |  `-- †Popanoceras
                     `--+-- †Marathonitoidea [Marathonitaceae]
                        `-- †Cycloloboidea [Cyclolobaceae]

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