jahom15 Posted April 20, 2014 Share Posted April 20, 2014 Here is a fossil from my last trip to GMR. I think its a dermal dental of some sorts. Any idea from what? I have no idea. Any help would be appreciated. Link to comment Share on other sites More sharing options...
Auspex Posted April 20, 2014 Share Posted April 20, 2014 Do I see a spiral pattern? If so, I want to say shark coprolite, and a very nice one! "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
jahom15 Posted April 20, 2014 Author Share Posted April 20, 2014 Its more like layers. The inside is hollow also. I dont know if that helps. Link to comment Share on other sites More sharing options...
Carl Posted April 21, 2014 Share Posted April 21, 2014 (edited) No doubt a fish coprolite. Sharks are always the most likely culprits because they are so common but all non-teleost fishes have spiral intestines. And even though I don't know the Green Mill Run fauna I'd bet there are plenty of non-shark, non-teleost fossils found there as well.Very nice find!! Edited April 21, 2014 by Carl Link to comment Share on other sites More sharing options...
jahom15 Posted May 5, 2014 Author Share Posted May 5, 2014 Thanks for the help identifing. Link to comment Share on other sites More sharing options...
Harry Pristis Posted May 6, 2014 Share Posted May 6, 2014 Sharks have one of two types of cloacal valves: scroll valve or spiral valve. Such valves increase the contact between the shark gut and food items, thus improving efficiency of nutrient uptake.Scroll valves are found in advanced sharks such as carchariniforms, while spiral valves are found in more primitive groups like lamniforms.A scroll valve produces a tightly-rolled "crepe" form of dropping (NPI). A spiral valve produces a corkscrew form of fecal pellet. http://pristis.wix.com/the-demijohn-page What seest thou else In the dark backward and abysm of time? ---Shakespeare, The Tempest Link to comment Share on other sites More sharing options...
RickNC Posted May 6, 2014 Share Posted May 6, 2014 If not that maybe a partial whale tooth. Link to comment Share on other sites More sharing options...
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