Tariccoia arrusensis
Upper Ordovician (Caradocian)
Puddinga Sequence – Unit A, Monte Argentu Formation, Rio Arrus Member (AGU2)
Fluminimaggiore, Sardinia, Italy

28mm on 91mm slab

Arthropod, Nektaspid

Tariccoia, like Naroia, has been considered a “soft-bodied trilobite” but most researchers have deemed it a member of a different group related to trilobites.

See: http://en.wikipedia.org/wiki/Tariccoia

You don’t see too many fossils from Italy on the market these days. Fossil exports haven’t been allowed for a while.