I'm positive this is a devonian brachiopod from michigan. probably
collected in the alpena/petosky/traverse city area. I'm also relatively
positive that it is a spirifirid brachiopod, which rules out florida
because none of this group persisted past the end of the paleozoic.
The Devonian is not my thing, per se, but you can find references
by Kesling (published at UofM in the 1960's) about Michigan fossils
from the Devonian that will help you ID. Also the faunas of Iowa
and NY were very similar during the mid-Devonian and much work as
been done there as well (look specifically for Carl Brett or Gordon
Baird's works in NY). Good luck. ...Chad F.
The fossil is a spiriferid brachiopod, most likely from the
Paleozoic (Devonian?) of Michigan.
- It is a brachiopod, not a mollusk. Definitely not from Florida.