Received secondhand photos from a friend - Maryland beach concretions, or something more?

[Mara_Masina]

Hello guys, hope you've all been well!

 

A friend recently reached out to me with these photos and asked if they were anything, so I apologize for the lack of formal photos/measurements. They were beachcombing on Assateague Island in MD, which isn't very fossiliferous on the surface from my understanding; even so, I told them I'd reach out to see if any of the three objects below are anything unusual. 

 

Thanks!

[Fossildude19]

These look like paleozoic fossils that were transported by dredging, or glaciers.

First looks like perhaps a bryozoan, and the others look like cross sections of shells, perhaps.

[Mara_Masina]

2 hours ago, Fossildude19 said:

These look like paleozoic fossils that were transported by dredging, or glaciers.

First looks like perhaps a bryozoan, and the others look like cross sections of shells, perhaps.

That's awesome. I'll pass this along to my friend! Thank you so much!

[Rockwood]

The top one looks like a coral to me. It could be a Rugose coral, but I'm not sure there is enough detail preserved to be certain of it. There are younger Scleractinian solitary corals that look similar.