Neogastropoda is an order of aquatic snails, both freshwater and marine gastropod molluscs. Neogastropods and their close relatives, such as Tonnoidea and Cypraeoidea, form the clade Latrogastropoda.

The shell has a well-developed siphonal canal. The elongated trunk-like siphon is an extensible tube, formed from a fold in the mantle. It is used to suck water into the mantle cavity. At the base of the siphon is the bipectinate (branching from a central axis) osphradium, a sensory receptacle and olfactory organ, that is more developed than the one in the Mesogastropoda. They achieved important morphological changes including e.g., the elongation of the siphonal canal, a shift in the mouth opening to a terminal position on the head, and the formation of a well-developed proboscis. Neogastropoda have been considered a natural group, clearly differentiated from other Caenogastropoda. or Buccinoidea have been alternatively proposed as the sister group of the remaining Neogastropoda.

  • Bandel, K. & Dockery, D.T. III (2012): Protoconch characters of Late Cretaceous Latrogastropoda (Neogastropoda and Neomesogastropoda) as an aid in the reconstruction of the phylogeny of the Neogastropoda. – Freiberger Forschungshefte, C 542 psf (20): 93-128, pls. 1-5.
  • Neogastropod Tree of Life
  • Crame J. A. (2013). "Early Cenozoic Differentiation of Polar Marine Faunas". PLoS ONE 8(1): e54139.