History

Discovered in the limestone beds of the Upper Mississippian formation, this fossil slab dates back over 330 million years to the Carboniferous Period. It showcases a beautifully preserved colony of crinoids—marine animals related to starfish and sea urchins—that once thrived in… pic.twitter.com/U77Brnh05r

— Dr. M.F. Khan (@Dr_TheHistories) July 5, 2025