Teichert, 1967, p.206 - Classification of the Ammonoidea:

Sublass Ammonoidea
   Order Anarcestina Miller & Furnish, 1954
   Order Goniatitida Hyatt, 1884
   Order Prolecanitida Miller & Furnish, 1954
   Order Clymeniiida Hyatt, 1884
   Order Ceratitida Hyatt, 1884
   Order Phyllocerida Arkell, 1950
   Order Lytocerida Hyatt, 1884
   Order Ammonoitida Agassiz, 1847