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
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