Description
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.