They are the Boletzkyidae based on the genus Boletzkya and the Naefiteuthidae based on the genus Naefiteuthis .
Bandel , et al ( 1983 ) divided the Boletzkyida into two , not too dissimilar families , each based on a single genus .
families are the Boletzkyidae based on the Boletzkyida Boletzkyida and the Naefiteuthidae based on the genus Naefiteuthis .
Bandel , et al ( 1983 ) divided the Boletzkyida into two , not too dissimilar families , each based on a single genus .