Urchin Fossil Replica, Eisco Scientific

This fossil replica represents an ancient sea urchin that crawled along the seafloor, feeding on algae. Although they are rarely preserved, echinoderms that looked like this had long spines like the sea urchins of today.

Though the echinoderm's durable test, or shell, is often preserved, the more fragile spines are rarely preserved. This fossil is great for learning about paleontology and fossil preservation. You can also bury it in the sand and make your own fossil hunt.