The World Register of Marine Species lists these 23 genera:1
Two fossil genera are also known: Styletoctopus from the Late Cretaceous (Cenomanian) of the Sannine Formation in Lebanon, and Bolcaoctopus from the Early Eocene (Ypresian) of Monte Bolca, Italy.2
Bouchet, Philippe (2015). "Octopodidae d'Orbigny, 1839". WoRMS. World Register of Marine Species. Retrieved 2018-01-31. https://www.marinespecies.org/aphia.php?p=taxdetails&id=11782 ↩
Mironenko, Aleksandr; Giusberti, Luca; Serafini, Giovanni; Zorzin, Roberto; Bannikov, Alexandre F. (2024-09-16). "The First Cenozoic Octopod: A Lower Eocene Record from Bolca, Northeastern Italy". Rivista Italiana di Paleontologia e Stratigrafia. 130 (3). doi:10.54103/2039-4942/23207. ISSN 2039-4942. https://riviste.unimi.it/index.php/RIPS/article/view/23207/22109 ↩