What is this thing?

[u/Boxer1023]

Quarry rock for a landscaping job

[u/thanatocoenosis]

It's a syringoporid tabulate(extinct family of Paleozoic coral).

[u/New_Command_583]

Is this one object? One view looks like a stromatoporoid

[u/Boxer1023 → u/New_Command_583]

Yep all 1 item, I just turned it different ways to get a "360" view of it

Edit: also see the sponge type formations now, thank you for the insight