The author of this genus stated that it is most closely related to Fusiturricula, from which it differs mainly in having a more attenuated protoconch, and in the form of the anal sinus. Cruziturricula has a mesocostate, unicarinate early spire sculpture, while Fusiturricula is bicarinate; Cruziturricula has irregular axial ribs, while those of Fusiturricula are regular and evenly spaced. The anal sinus in Fusiturricula is deep, with a vertical angle with the suture; that of Cruziturricula is a deep slot, the upper edge being a retrocurrent oblique line against the suture. Range — lower and upper Eocene of Peru, Miocene of Peru and Ecuador, Pliocene of Panama and Costa Rica and Recent, tropical West America.