Pseudasaphus tecticaudatus Rare Russian Trilobite

This is a a well inflated example of a scarce Asaphid named Psedasaphus tecticaudatus. The golden Calcite expskeleton is complemented by the white limestone matrix, with the trilobite shown in a slightly reflexed position. Some researchers believe this is actually a specicies of Leningradites. It certainly resembles that taxon quite closely, especially in the elongated, swept-back genal spines.