title: Pseudorthonychiidae
text: # Pseudorthonychiidae
  
  Pseudorthonychiidae is an extinct, monogeneric (contains only one genus) family of fossil snails, gastropod mollusks in the clade Cycloneritimorpha (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).
  
  ## Genera
  
  The sole genus in this family is:
  
  * Pseudorthonychia Bandel & Frýda, 1999
  