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

23mm complete Naroia-like arthropod on 86mm x 27mm slab. Extremely rare.

Arthropod, Nektaspid

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

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.