Name:
Archaeocidaris sp. Age: Pennsylvanian Formation: Winchell Formation Location: Brown County, Texas Size: 5.5 inches across spines This specimen is not for sale Click here for similar specimens that are for sale
This is a large spiny sea urchin fossil. It is an Archaeocidaris sp. echinoid from Texas. This specimen has great detail. Most of the fragile "saw blade-like" spines are still intact and attached (rare). The urchin is nicely centered on the natural matrix plate. This is a very collectible spiny echinoderm.