Megistaspidella triangularis (Schmidt, 1906). This trilobite was found in the Volkhovian level, Putilovo quarry, Near St. Petersberg, Russia.

Dates to the Lower Ordovician Period. 

Size: Trilobite - 7.8 cm x 4.4 cm. 
Matrix: 12.5 cm x 8.3 cm x 2.7 cm
  
The hard calcite exoskeleton shows up nicely against the lighter limestone matrix. 

Please note that these Russian trilobites always have a small amount of restoration, this trilobite has approximately 4-5% restoration.

*** Please check out the recent additions page where fossils for all price ranges are added daily (https://fossilsforsaleuk.co.uk/t/recent-additions)  ***