Jordanralphy Posted July 11, 2016 Share Posted July 11, 2016 (edited) I picked up an ammonite fossil on holiday and the lady in the shop said its from Madagascar and believes it's real, what do you think? How old may it be if it is real? Edited July 11, 2016 by Jordanralphy Link to comment Share on other sites More sharing options...
ynot Posted July 11, 2016 Share Posted July 11, 2016 Welcome to TFF! It is a real fossil. It is an ammonite species from Madagascar, and they are fairly common. Others can give the age and be more specific about the species name. Tony 1 Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
JohnBrewer Posted July 11, 2016 Share Posted July 11, 2016 Not a bad size. I love the way these are split so you can see the internal chambers John Map of UK fossil sites Link to comment Share on other sites More sharing options...
Runner64 Posted July 11, 2016 Share Posted July 11, 2016 Definitely real and from Madagascar! We might need to see the non-polished side in order to tell you what species. Do you mind sending a picture from that angle? These ammonites are lower/early cretaceous so they're about 113-100 million years old. Link to comment Share on other sites More sharing options...
Jordanralphy Posted July 11, 2016 Author Share Posted July 11, 2016 Definitely real and from Madagascar! We might need to see the non-polished side in order to tell you what species. Do you mind sending a picture from that angle? These ammonites are lower/early cretaceous so they're about 113-100 million years old. I hope that could possibly help? Thankyou! Link to comment Share on other sites More sharing options...
Runner64 Posted July 11, 2016 Share Posted July 11, 2016 image.jpeg I hope that could possibly help? Thankyou! That helps! I am by no means an expert with ammonites but by comparing photos I'm guessing it's a Cleoniceras cleon. Link to comment Share on other sites More sharing options...
Jordanralphy Posted July 11, 2016 Author Share Posted July 11, 2016 That helps! I am by no means an expert with ammonites but by comparing photos I'm guessing it's a Cleoniceras cleon. Thank you! Do you know what the inside parts are and what they all did or were used for? Link to comment Share on other sites More sharing options...
ynot Posted July 11, 2016 Share Posted July 11, 2016 (edited) This is the shell of a relative of the squid. the chambers were used for ballast -- so the ammonite could hold or change it's depth in the water. Tony Edited July 11, 2016 by ynot Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Jordanralphy Posted July 11, 2016 Author Share Posted July 11, 2016 This is the shell of a relative of the squid. the chambers were used for ballast -- so the ammonite could hold or change it's depth in the water. Tony Interesting, I've heard they only lived in the last chamber of the shell, but this doesn't seem to have one? So what does that mean? Link to comment Share on other sites More sharing options...
ynot Posted July 11, 2016 Share Posted July 11, 2016 (edited) The body of the ammonite lived in the largest chamber and built on it continuously as they got bigger. They would add a new wall when the living chamber got to big. There is a tube that runs through all of the chambers. This living chamber is missing in Your piece, as it is on most of them. Tony Edited July 11, 2016 by ynot Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
JohnBrewer Posted July 11, 2016 Share Posted July 11, 2016 To help id take a photo of the living chamber from the front (where the body came out of the shell) and the keel (the 'backbone'). John Map of UK fossil sites Link to comment Share on other sites More sharing options...
MeargleSchmeargl Posted July 11, 2016 Share Posted July 11, 2016 If that is not real, then i'm dilusional (it's real). Every single fossil you see is a miracle set in stone, and should be treated as such. Link to comment Share on other sites More sharing options...
Frostyoceras Posted July 16, 2016 Share Posted July 16, 2016 cleoniceras besairiei or cleoniceras cleon are both candidates worth considering. 1 It's a lazy man that can't find his wife a second job! Link to comment Share on other sites More sharing options...
Jordanralphy Posted July 17, 2016 Author Share Posted July 17, 2016 cleoniceras besairiei or cleoniceras cleon are both candidates worth considering. What do you mean? Link to comment Share on other sites More sharing options...
ynot Posted July 17, 2016 Share Posted July 17, 2016 What do you mean? cleoniceras besairiei and cleoniceras cleon are 2 species of ammonites and Yours could be either one or something else. Tony Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
caldigger Posted July 17, 2016 Share Posted July 17, 2016 Interesting, I've heard they only lived in the last chamber of the shell, but this doesn't seem to have one? So what does that mean? On so many of these cut and polished ammos, the ends are cut off and ground flat to make it more visually pleasing for display purposes. Link to comment Share on other sites More sharing options...
Frostyoceras Posted July 18, 2016 Share Posted July 18, 2016 cleoniceras besairiei and cleoniceras cleon are 2 species of ammonites and Yours could be either one or something else. Tony Thanks Tony It's a lazy man that can't find his wife a second job! Link to comment Share on other sites More sharing options...
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