Armandop Posted July 11, 2021 Share Posted July 11, 2021 Hello guys , I found some bones in big brook (Cretaceous fossiles), nj and I don't know if they are modern or ice age. I also added another strange fossil I found but can't id Link to comment Share on other sites More sharing options...
Vae70 Posted July 11, 2021 Share Posted July 11, 2021 All likely modern, tannins present in the brooks can change the color of bones to black very quickly 1 1 Link to comment Share on other sites More sharing options...
Rockwood Posted July 11, 2021 Share Posted July 11, 2021 Modern bones will usually lighten in color considerably as they dry out. 1 Link to comment Share on other sites More sharing options...
Armandop Posted July 11, 2021 Author Share Posted July 11, 2021 Do you think if they don't get lighter the might be older? Btw I've heard of the fire test to see the collagen content. Should I do that? Link to comment Share on other sites More sharing options...
Rockwood Posted July 12, 2021 Share Posted July 12, 2021 5 hours ago, Armandop said: Do you think if they don't get lighter the might be older? Btw I've heard of the fire test to see the collagen content. Should I do that? I really don't have enough experience to know how reliable the color remaining might be as an indicator. Putting it over a flame would best it though, I think. I would check for stink. Link to comment Share on other sites More sharing options...
The Jersey Devil Posted July 12, 2021 Share Posted July 12, 2021 Yes, these are modern bones. The first is a concretion. “You must take your opponent into a deep dark forest where 2+2=5, and the path leading out is only wide enough for one.” ― Mikhail Tal Link to comment Share on other sites More sharing options...
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