Greetings @david-todd ! Your specimen looks more like a modern coral than a tabulate coral like Favosites. It also lacks the classic honeycomb structure.

@bill-heim is the resident shark expert

Location?

I’m pretty sure its from south Florida, but I’m not sure

Trilobite pygidium. This is an excellent website that identifies the different anatomical features of a trilobite: https://www.trilobites.info/trilomorph.htm

I concur with @patrick-hsieh

@patrick-hsieh @matthew-gramling thank you!

Possibly a gastropod imprint in the top right specimen?

@daniel-park I just added a better pic she sent me! 2nd one

@matthew-gramling @a-trilobite any thoughts? Second shot is better

@holly-romanek I concur with @daniel-park . This appears to most likely be a gastropod external mold in a concretion.

@matthew-gramling @daniel-park sweet! Thanks guys!

clearer images would be appreciated, but there seem to be some brachiopods in this specimen.

I cant really identify this.

I’d say this is a stromatolite too.

maybe a trilobite could have been there.

conulariid

I second @leonardo-miranda .

I agree with @leonardo-miranda and @matthew-gramling.

conulariid for sure

Thanks you all for your responses.

Possibly a Monticulipora mammulata, a bryozoan found in Kentucky