This is a very nice Canadian trilobite. It is a complete Leviceraurus mammilloides from Ontario, Canada. We just acquired this specimen from a major trilobite collection. The trilobite is nicely outstretched and wonderfully prone. The thick shell exoskeleton is well-preserved. Both of the tailspines are fully intact, which is extremely unusual. The trilobite is aesthetically centered on the rectangular matrix block. This is a great example of this elusive type of Ceraurus from Canada.