title: Liwiidae
text: # Liwiidae
  
  Liwiidae is a family of arthropods in the order Nektaspida. Members are known from the Cambrian and Ordovician periods.
  
  ## Taxonomy
  
  * Liwia Dzik and Lendzion, 1988
  
     * Liwia plana Lendzion, 1975
  
     * Liwia convexa Lendzion, 1975
  * Soomaspis Fortey & Theron, 1995
  
     * Soomaspis splendida Fortey & Theron, 1995
  * Tariccoia Hammann et al., 1990
  
     * Tariccoia arrusensis Hammann et al., 1990
  