Collignoniceratidae Wright & Wright, 1951
Prionocyclus albinus
Prionocyclus bosquensis
Prionocyclus germari
Prionocyclus hyatti
Prionocyclus macombi
Prionocyclus novimexicanus
Prionocyclus pluricostatus
Prionocyclus quadratus
Prionocyclus wyomingensis
