Abstract
Moluscs of the class Scaphopoda are characterized by the presence of a univalve and tubular external shell, open at both ends and with some degree of curvature. The lower species richness of the group (= 517 Recent species) and your apparent conchilio-morphological homogeneity were factors less atractive within the malacologists, giving to the Scaphopoda a status of relative unknowledgeme…