Pseudoasaphus tecticaudatus Rare Russian Trilobite

This is one of the rare Russian Ordovician trilobites. As implied by the "pseudo" in the name, it bear striking resemblance to the genus asaphus that abounds in the region. It is also quite similar to Leningradites longispinus, another rare Russian trilobite from the Asery Horizon. Also see Russian Trilobites.