JohnBrian Posted February 13, 2016 Share Posted February 13, 2016 Maybe this has been posted before but I couldn't find it! I was reading a commercial web site a couple of weeks ago & they made the claim that dinosaur teeth are the actual teeth. They said the original ("when alive") tooth material has not been replaced with other minerals, like what happens to bones. I Googled the subject but didn't find any answers. BTW, unfortunately, I forget what site I was looking at! Regarding mineral replacement on other fossils, I have a baculite that has a mother of pearl (aragonite?) shell. Is this "original" to the animal or is it a mineral replacement? Finally, I have a spirifer (found it in a parking lot in Missouri last August) & the outside of the shell is colored brown while the inside is white. Are fossil shells the original shells or mineral replacement? ---------------------------------------------------------------------------- John Link to comment Share on other sites More sharing options...
JohnJ Posted February 13, 2016 Share Posted February 13, 2016 You might find this interesting reading from a couple of years ago. 2 The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
Guguita2104 Posted February 13, 2016 Share Posted February 13, 2016 Interesting discussion,John. Link to comment Share on other sites More sharing options...
JohnBrian Posted February 14, 2016 Author Share Posted February 14, 2016 (edited) Interesting discussion,John. Yes it is. Wish more people would get involved! BTW, thanks for the link JohnJ! Edited February 14, 2016 by JohnBrian ---------------------------------------------------------------------------- John Link to comment Share on other sites More sharing options...
DeepTimeIsotopes Posted February 14, 2016 Share Posted February 14, 2016 Sometimes it's mixed methods. Fossilization isn't limited to one way or another. 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...
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