title: Gyriscus
text: # Gyriscus
  
  Gyriscus is a genus of sea snails, marine gastropod mollusks in the family Architectonicidae, the staircase shells or sundials.
  
  ## Species
  
  Species within the genus Gyriscus include:
  
  * Gyriscus asteleformis Powell, 1965
  * Gyriscus hayashii Shikama, 1970
  * Gyriscus jeffreysianus (Tiberi, 1867)
  