title: Rotaliotina discoidea
text: # Rotaliotina discoidea
  
  Rotaliotina discoidea , common name the discoid delphinula, is a species of small sea snail, a marine gastropod mollusk, in the family Liotiidae.
  
  ## Description
  
  The size of the shell varies between 4 mm and 9 mm. The shell has a discoidal shape, with a flattened spire. The periphery shows two prominent ribs, connected by lattices which a subspinously project. The surface contains clathrate ridges, the interstices of which are finely striated.
  
  ## Distribution
  
  This marine species occurs off the Philippines, Papua New Guinea and Australia (Queensland) and Norfolk Island and Lord Howe Island.
  
  