See text Bellerophontaceae Ulrich & Schofield, 1897 Bellerophontoidea, common name "bellerophonts",[2] is a superfamily of extinct planospirally-coiled globose molluscs.

The narrower apex was probably held to the rear while the wider aperture was oriented to the front where the animal could easily emerge or retreat.

Knight, et al. 1960 (Treatise Part I reprinted 1989)[6] discuss the Superfamily Bellerophontacea at some length and include within it the Bellerophontidae, Cyrtolitidae, Sinuopeidae and Tropidodiscidae.

Bouchet et al. (2005)[2] leaves the higher taxonomic position of the Bellerophontoidea as uncertain (Gastropoda or Monoplacophora) and divides the group into 8 families as listed: The Bellerophontidae, Bucanitidae, Pterothacidae, and Tropododiscidae compare with the subfamilies Bellerophontinae, Bucanitinae, Pterothacinae, and Tropododiscinae included in the Bellerophontidae and the Bucanellidae, Euphemitidae, and Sinuitidae compare with the subfamilies Bucanellinae, Euphemitinae, and Sinuitinae included in the Sinuitidae, as found in the Treatise.

Bouchet & Rocroi (2005)[2] points out (page 271) that assignment of "symmetrical univalved mollusks "bellerophonts" either to Gastropoda or to Monoplacophora or Tergomya is controversial."