Cnemidopyge nuda (Murchison, 1839)
Complete Trilobite. Positive and negative. Both are covered in a film of fine silvery gypsum crystals. Very unusual preservation.
Ordovician, 'Llandeilo' Stage, Llanfawr Mudstone Group.
Stream east of Pencerrig Lake, north of Builth Wells, Powys, Wales.
Trilobite : 1.6 cm long.
