Fossil Hunter: tinbum
Location: Cornwall, United Kingdom
[Editor's Note: Nice find and you would not be the first to be fooled by one of these fossils! What you are looking at is a piece of the shell of a fossil ammonite. Those ridges on the inside are the internal structure of the shell. The southern coast of the UK is well known for its spectacular ammonite fossils notably in the area of Lyme Regis. You will need to fill in the missing pieces of the shell with your imagination, but compare it to some of the other ammonite fragments here by typing "ammonite" in the search box.]
Fossil Collector: Alex B.
[Editor: Beautiful find and an interested method of fossil collecting! Florida is well-noted for calcite crystal encrusted shell fossil like this whelk or conch. Very interesting both as a fossil an for display. Similar fossil are found more conventionally at the Drum Point Crystal Mine and throughout the state.]
Fossil Collector: Scott M.
Location: Glen Arbor, Michigan
[Editor's note: Hmm...the top picture certainly looks like the texture of a crinoid fossil. The second picture could be the cross section of a crinoid, but also looks similar to the base of a horn coral. Any thoughts from Michigan collectors?]