Amecephalites Eddy & McCollum, 1998 † (original description)
Brimethyris Alvarez, Rong & Boucot, 1998 † (original description)
Carteridina Alvarez, Rong & Boucot, 1998 † (original description)
Contophrentis Oliver, 1998 † (original description)
Cooperispira Alvarez, Rong & Boucot, 1998 † (original description)
Delamarella Eddy & McCollum, 1998 † (original description)
Edithais Vermeij, 1998 † (original description)
Georgiacetus Hulbert, Petkewich, Bishop, Bukry & Aleshire, 1998 † (original description)
Kestocenebra Vermeij, 1998 † (original description)
Muregina Vermeij, 1998 (original description)
Nahoniella Shi, 1998 † (original description)
Panacus Eddy & McCollum, 1998 † (original description)
Storeacolumnella Johnson, Mu & Rong, 1998 † (original description)
Tetraloba Alvarez, Rong & Boucot, 1998 † (original description)
Ursinella Eddy & McCollum, 1998 † (original description)