Recently picked this piece up on Myrtle Beach SC. It appears to be a chambered sponge, possibly in Sphinctozoa. I have attached close up pics of the Horizontal septa between the chambers and another of what I believe to be the spicules. Greatly appreciate help on identification. Thanks….Lance
@lance-comfort Lance, I agree that the last photo does indeed look like sponge spicules so I believe it is a sponge. That’s about as much help as I can give you as there are lots of kinds of sponges and my minimal knowledge is in the Ordovician ones. Are you a member of the North Carolina Fossil Club? If not, I think you should join as I’d bet there are people there that could be more helpful on these NC fossils. @lmccall Another thing to check is the first entry at the top of the What is it? Forum. It is called “Fossil specialties + contacts.” This has a list of fossil experts and their specialties. Maybe you can find someone there that could help further.