Hercoglossidae was established by Spath in 1927 for smooth, involute
nautiloids characterized by a suture with differentiated elements, known from the Upper Jurassic to the Oligocene. Hercoglossids make up part of the
Nautilid superfamily Nautilaceae. ( 1964) Four genera are described in the Treatise ( 1964). They are
Hercoglossa,
Aturoidea,
Cimonia, and
Deltoidonatilus. All have a whorl section that is generally rounded, except for
Deltoidonatilus where in it is triangular in outline. Sutural complexity increases from
Cimonia to
Hercoglossa and to
Aturoidea. The suture in
Deltoidonautilus is like than in
Hercoglossa. (ibid)
