Amecephalus jamisoni

This is a trilobite from Spence shale, belonging to the genus Amecephalus. You can see that most of the Amecephalus jamisoni are not very large, but they have preserved their spines intact.
Among the Amecephalus produced by Spence shale, its price may be the highest. There is one kind of Amecephalus.sp that I have never seen sold by merchants. It may be more expensive than A.jamisoni.
I hope I can collect it one day
This was just sold to me by my good friend. I am very grateful to him.