Liwiidae
Encyclopedia
Liwiidae is a family of nektaspid (stem-group chelicerate) in the order Nectaspida
. Below are the genera and species of this family:
Buenaspis (Buenaspis forteyi), Liwia (Liwia plana), Soomaspis (Soomaspis splendida), and Tariccoia (Tariccoia arrusensis).
Nectaspida
The Nectaspida is an extinct order of soft-bodied arthropods proposed by Raymond in 1920; its taxonomic status is uncertain. Specimens are known from the early Cambrian to the upper Silurian periods. Whittington placed the order in the Trilobita...
. Below are the genera and species of this family:
Buenaspis (Buenaspis forteyi), Liwia (Liwia plana), Soomaspis (Soomaspis splendida), and Tariccoia (Tariccoia arrusensis).