Trypanaxidae
Introduction '''Trypanaxidae''' is an extinct family of fossil sea snails, marine gastropod molluscs in the superfamily Campaniloidea.According to the taxonomy of the Gastropoda by Bouchet & Rocroi (2005), the family Trypanaxidae has no subfamilies.
Genera Genera within the family Trypanaxidae include:* † ''Trypanaxis'' Cossmann, 1889 - the type genus* † ''Alocaxis'' Cossmann, 1889
References *  The Paleobiology Database: Trypanaxidae