Well-preserved fossils are abundant in the Lower Pleistocene Croatan Formation (a.k.a. James City Formation) of eastern North Carolina, USA. Here's a nice specimen of the scleractinian coral Solenastrea hyades (Dana, 1846) showing nicely radiating septa in each corallite.
Classification: Animalia, Cnidaria, Anthozoa, Hexacorallia, Scleractinia, Faviina, Faviidae
Solenastrea hyades (5.3 cm across) from the Croatan Formation (Lower Pleistocene) of eastern North Carolina, USA.