Blastoids Fossil INCREDIBLE Detail! 350 Million Years Old!
This is an absolutely remarkable fossil. Although blastoid fossils are fairly common, the detail on this specimen is truly incredible. It is almost like looking at the living creature, as it was 350 million years ago. This specimen was found in St. Clair County, Illinois in the Ridenhower Formation. This piece is from the Upper Mississippian. The scientific name of these blastoids is Pentremites godoni. There is also a very nice Mucrospirifer fossil in the piece, as well.
About 4.5 x 4 x 1" thick