Archeocyathus Billings, 1861 † (original description)
Arthroclema Billings, 1862 † (original description)
Bathyurellus Billings, 1865 † (original description)
Calathium Billings, 1865 † (original description)
Clisospira Billings, 1865 † (original description)
Cyrtocerina Billings, 1865 † (original description)
Endymion Billings, 1862 † accepted as Endymionia Billings, 1865 † (original description)
Endymionia Billings, 1865 † (original description)
Eopteria Billings, 1865 † (original description)
Eospongia Billings, 1861 † (original description)
Euchasma Billings, 1865 † (original description)
Rhabdaria Billings, 1865 † (original description)
Straparollina Billings, 1865 † (original description)
Trachyum Billings, 1865 † (original description)