They are considered by some experts to be primitive sea snails with primarily symmetrically coiled shells, marine gastropod mollusks.

R.C Moore [1] and J. Brooks Knight et al 1960 [2] recognized bellerophonts as true gastropods, placing them as the suborder Bellerophontina in the subclass Prosobranchia, order Archaeogastropoda.

The Bellerophontacea, which range from the Upper Cambrian to the Lower Triassic, are more developed and more diverse; that taxon contains three families, the Cyrtolitidae, Sinuitidae, and Bellerophontidae, along with subfamilies and tribes.

Ponder & Lindberg (1997) included the Bellerophontida, as the Bellerophontinaka, in with the Mimophserina, in the Class Gastropoda, incertæ sedis, excluding them from the Eogastropoda, or Prosobranchia.

Bouchet & Rocroi (2005) expressed greater uncertainty, placing the bellerophonts, as Bellerophontoidea in Paleozoic molluscs with isostrophically coiled shells of uncertain position (Gastropoda or Monoplacophora).