blackmoth Posted November 19, 2018 Share Posted November 19, 2018 T3 of Beijing international airport. All the restroom walls have limestone plates with fossil-like features. I am not sure even they are fossils or not, as some of them have the outlook----instead of cross sections----of typical fossils. If they are indeed fossils, what is a good guess of its age? Link to comment Share on other sites More sharing options...
blackmoth Posted November 19, 2018 Author Share Posted November 19, 2018 more fotos. Link to comment Share on other sites More sharing options...
ynot Posted November 19, 2018 Share Posted November 19, 2018 No way of telling unless You know where the rock came from or can find an identifiable marker species. 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...
Ramon Posted November 19, 2018 Share Posted November 19, 2018 Those are fossils, probably of bivalves. But I agree with @ynot, unless you know where the rocks came from you can’t know the age. "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
blackmoth Posted November 20, 2018 Author Share Posted November 20, 2018 14 hours ago, Ramon said: Those are fossils, probably of bivalves. But I agree with @ynot, unless you know where the rocks came from you can’t know the age. which one looks like a bivalve? Link to comment Share on other sites More sharing options...
Ramon Posted November 20, 2018 Share Posted November 20, 2018 3 hours ago, blackmoth said: which one looks like a bivalve? Most of them could be pieces of bivalves, especially last one. "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
blackmoth Posted November 22, 2018 Author Share Posted November 22, 2018 On 11/20/2018 at 12:53 PM, Ramon said: Most of them could be pieces of bivalves, especially last one. Could you elaborate a little bit? I have no idea what a cross section of bivalve would look like. When I look at them, things like worma(fusulina) , amonites or even shrimps and snails came into my mind, but no bivalves. Link to comment Share on other sites More sharing options...
Ramon Posted November 22, 2018 Share Posted November 22, 2018 2 hours ago, blackmoth said: Could you elaborate a little bit? I have no idea what a cross section of bivalve would look like. When I look at them, things like worma(fusulina) , amonites or even shrimps and snails came into my mind, but no bivalves. Its impossible to know what exactly those fossils where, because they are only cross sections. "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
andreas Posted November 22, 2018 Share Posted November 22, 2018 I guess jurassic or cretaceuos of age. It is(or it resembles) Plano limestone from Croatia. https://www.stonecontact.com/plano-limestone/s6138 Link to comment Share on other sites More sharing options...
blackmoth Posted November 24, 2018 Author Share Posted November 24, 2018 On 11/22/2018 at 12:36 PM, andreas said: I guess jurassic or cretaceuos of age. It is(or it resembles) Plano limestone from Croatia. https://www.stonecontact.com/plano-limestone/s6138 thanks a lot. it does look similar. Link to comment Share on other sites More sharing options...
blackmoth Posted November 25, 2018 Author Share Posted November 25, 2018 On 11/22/2018 at 12:25 PM, Ramon said: Its impossible to know what exactly those fossils where, because they are only cross sections. not to ID any particular fossil. I just could not see any bivalve cross section , with little experience. In my imagination, a plane cutting through a common bivalve shell, would look like any of the two figures in the pic Link to comment Share on other sites More sharing options...
DeepTimeIsotopes Posted November 25, 2018 Share Posted November 25, 2018 12 minutes ago, blackmoth said: not to ID any particular fossil. I just could not see any bivalve cross section , with little experience. In my imagination, a plane cutting through a common bivalve shell, would look like any of the two figures in the pic Take a look at these bivalves in thin sections. This is what the would look like if we cut at random planes. 2 Each dot is 50,000,000 years: Hadean............Archean..............................Proterozoic.......................................Phanerozoic........... Paleo......Meso....Ceno.. Ꞓ.OSD.C.P.Tr.J.K..Pg.NgQ< You are here Doesn't time just fly by? Link to comment Share on other sites More sharing options...
ynot Posted November 25, 2018 Share Posted November 25, 2018 I also see at least one gastropod. But most of this looks like fragmented pieces that are cut in cross section, so not many whole cross section views. 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...
Ramon Posted November 27, 2018 Share Posted November 27, 2018 On 11/25/2018 at 11:24 AM, UtahFossilHunter said: Take a look at these bivalves in thin sections. This is what the would look like if we cut at random planes. I agree, Bivalve cross sections can have almost any shape "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
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