i recently got a maintenance job at a local golf course and found some fossils in the soil, and at least one of them it a cephalopod. here are a few of them now:
1. Apertural end of a Horn Coral?
2. Worn Tabulate Coral?
3. Don't know, maybe burrows of some sort?
4. Possible ceph, could we see a view of the broken end?
all i know for sure about 1 and 2 is that they are both rugose. they resemble Heliophyllum and Eridiophyllum from the Devonian, but i cant tell what period theyre from. 3 might be a Mississippian rugose coral. im pretty sure 4 is the Mississippian nautiloid Mooreoceras. one of the papers ive read lists about 9 species in Michigan (along with over a dozen other ammonoid and nautiloid genera).
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