Bettonolithus
Bettonolithus is a genus of trilobites of the Order Asaphida. It is in the family Trinucleidae.
Fossil specimens have been found in the Lower Ordovician rocks of Gilwern [Hill, Powys|Gilwern Hill] in Powys, Wales.
This trilobite was blind but anatomical evidence suggests it sifted organic matter on the seabed.