Birmanites

Birmanites is a genus of trilobites in the order Asaphida, family "Asaphidae".
They lived in the Ordovician period, from the Tremadocian age until the Lower Ashgillian age (488.3-449.5 million years ago). These arthropods were a low-level epifauna, fast-moving and detritivore.
Distribution.
Ordovician of Canada, China, the Czech Republic, Ireland, Italy, Sweden, the United Kingdom; Llandeilo of China; Arenigian of Argentina, China.