This is an extremely nice plate of Middle Cambrian trilobites from Russia. There are two different trilobites on the plate. There is an exquisitely preserved specimen of Hatangia scita. Also, there is a very rare specimen of Irinia arcuata. Both trilobites are very nicely articulated and exhibit great detail. The trilobites have great color and contrast. They are well positioned on the natural plate of shale. This is a superb double trilobite specimen from the Middle Cambrian.