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What is this? Found at Big Brook, NJ (Late Cretaceous)


Blakey

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I recently found this at Big Brook in NJ, USA. I am not sure what this is. The outer layer appears to have a spiral formation towards one end. It's just about 1 inch long (maybe a little less). Thanks for any help!

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To me it resembles a gastropod shell but as far as an ID on specie or genus I don't know,

1.1 Gastropoda Shell Form | Digital Atlas of Ancient Life

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Looks like a coprolite to me. 

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After taking a second look, it does look like coprolite, it doesn't have the texture or the sharpness of a shell. My bad

“If fossils are not "boggling" your mind then you are simply not doing it right” -Ken (digit)

"No fossil is garbage, it´s just not completely preserved” -Franz (FranzBernhard)

"With hammer in hand, the open horizon of time, and dear friends by my side, what can we not accomplish together?" -Kane (Kane)

"We are in a way conquering time, reuniting members of a long lost family" -Quincy (Opabinia Blues)

"I loved reading the trip reports, I loved the sharing, I loved the educational aspect, I loved the humor. It felt like home. It still does" -Mike (Pagurus)

“The best deal I ever got was getting accepted as a member on The Fossil Forum. Not only got an invaluable pool of knowledge, but gained a loving family as well.” -Doren (caldigger)

"it really is nice, to visit the oasis that is TFF" -Tim (fossildude19)

"Life's Good! -Adam (Tidgy's Dad)

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Thanks for all of the information. The two things that I find odd about this fossil are

1) it has a smooth "scoop" shape on one end (best documented in the first photo).

2) the surface pattern/texture almost resembles wood.  

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Coprolites come in all shapes and sizes, many things could have happened to it when it was still fresh, maybe a rock fell on the one end creating the flattened scoop.

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“If fossils are not "boggling" your mind then you are simply not doing it right” -Ken (digit)

"No fossil is garbage, it´s just not completely preserved” -Franz (FranzBernhard)

"With hammer in hand, the open horizon of time, and dear friends by my side, what can we not accomplish together?" -Kane (Kane)

"We are in a way conquering time, reuniting members of a long lost family" -Quincy (Opabinia Blues)

"I loved reading the trip reports, I loved the sharing, I loved the educational aspect, I loved the humor. It felt like home. It still does" -Mike (Pagurus)

“The best deal I ever got was getting accepted as a member on The Fossil Forum. Not only got an invaluable pool of knowledge, but gained a loving family as well.” -Doren (caldigger)

"it really is nice, to visit the oasis that is TFF" -Tim (fossildude19)

"Life's Good! -Adam (Tidgy's Dad)

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It looks like a coprolite to me also.

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1 hour ago, Blakey said:

Thanks for all of the information. The two things that I find odd about this fossil are

1) it has a smooth "scoop" shape on one end (best documented in the first photo).

2) the surface pattern/texture almost resembles wood.  

 

What you have is a coprolite.

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: )

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  • 3 weeks later...

Arriving late as well. That is simple a superb spiral coprolite! Nice find. And although shark is the most likely producer for the setting it was found in, it could also be from a ray, coelacanth, sawfish, bowfin, sturgeon, lungfish, gar, or chimaeroid - all of these fish have spiral intestines and have been recovered in the Cretaceous of NJ.

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