The
taxonomy of the Gastropoda by Bouchet & Rocroi, 2005 categorizes Bucaniidae in the superfamily
Bellerophontoidea, within the
Paleozoic molluscs of uncertain systematic position with isostrophically coiled shells (Gastropoda or Monoplacophora). J.B. Knight
et al, in 1960 included the bucaniids in the Bellerophontidae as the subfamily Bucaniinae, and considered them true gastropods belonging to the
prosobranch order,
Archaeogastropoda, giving evidence that embryonic torson is not the cause of asymmetric coiling of typical gastropod shells. Physiologic restriction points to the viscera being turned 180 degrees with the gills and anus to the front and the aperture positioned to best facilitate retreat inward by the head and foot. The
Trestise Part I divided the Bucaniinae into two tribes, the Bucaniides, in which the exhalent emargination is a short slit, and the Salpingostoma in which the exhalent orifice consists of one or more holes in series, known as trema. Bouchet & Rocroi, (2005) have elevated the tribes Bucaniides and Salpingostoma to the subfamilies
Bucaniinae and
Salpingostomatinae. They added the subfamilies,
Undulabucaniinae and
Plectonotinae which includes the tribes
Plectonotini and
Boucotonotini. == Genera ==