title: Abyssochrysoidea
text: # Abyssochrysoidea
  
  Abyssochrysoidea is a superfamily of deep-water sea snails, marine gastropod mollusks unassigned in the orderCaenogastropoda.
  
  These marine snails are part of the fauna of the hydrothermal vents and other deep-water habitats.
  
  ## Families
  
  Families within the superfamily Abyssochryoidea include:
  
  * Abyssochrysidae Tomlin, 1927
  * Provannidae Warén & Ponder, 1991
  * † Hokkaidoconchidae Kaim, R. G. Jenkins & Warén, 2008
  * unassigned : one genus Rubyspira Johnson, Warén, Lee, Kano, Kaim, Davis, Strong & Vrijenhoek, 2010
  
  These two families Provaniidae and Abyssochrysidae were previously placed in the "Zygopleuroid group" (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).
  
  Subsequently Provannidae was placed in the superfamily Abyssochrysoidea by Kaim et al. (2008) and then Abyssochrysidae was also moved to Abyssochrysoidea.
  
  