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Hi everyone! I found these at the Big Brook Preserve in Colts Neck, NJ in May of 2020. This was my first fossil hunt so I'm pretty sure I was at the wrong exact location but I was nearby. I found them directly in the creek and had to use a sifter. This was also after a rainstorm. I'm not sure if anything here is a fossil, but I figured I'd ask the experts! Please let me know if you want closer pictures or other angles of any of them. Thanks for taking a look!

 

1.

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2.IMG_8436-min.thumb.JPG.6dc56024d75f40766f162a19174a07f0.JPG

3.IMG_8438-min.thumb.JPG.718697562f3bdc9421a234fb1272de71.JPG

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7.

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9.

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Some of them appear to be geologic. But I think 2 and 7 are bone fragments, and 12 are belemnite pieces.

"Its webs of living gauze no more unfurl;

Wrecked is the ship of pearl!

And every chambered cell,

Where its dim dreaming life was wont to dwell" :ammonite01:

-From The Chambered Nautilus by Oliver Wendell Holmes

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All appear geological to me except 12, which as yardrockpaleo mentioned are belemnite guard fragments. 

"In Africa, one can't help becoming caught up in the spine-chilling excitement of the hunt. Perhaps, it has something to do with a memory of a time gone by, when we were the prey, and our nights were filled with darkness..."

-Eternal Enemies: Lions And Hyenas

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I agree that most are rocks or concretions and that #12 are partial belemnite guards. #1 might be a weathered shrimp borrow piece. #9 might be a weathered nautiloid shell. Straight-shelled nautiloids are not part of the Upper Cretaceous fauna one normally finds in the brooks, but occasionally older Paleozoic fossils brought down by the glacier from up north do find their way there. A friend of mine did find a nautiloid there in the fall. Then again it could be just a suggestively shaped rock like most of the others you have pictured.  

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4 hours ago, dinodigger said:

Number 1 is ophiamorpha

Concur.  For the OP,  ophiomorpha is a paleontological term for burrow.

These are pretty common in Cretaceous sediments such s those yielding the fossils at Big Brook.  I usually see these attributed to a burrowing shrimp, Callionassa sp.   You've got a very nice one here.  The little bumps you see each represent a mouthful or clawful of sediment that the creature moved to create its burrow.  Kinda nifty if ya think about it. 

 

I believe no. 9 is a smaller piece of burrow.

 

No. could be a coprolite. Could you send photos of other angles?

 

I believe that the remainder are geologic, with many limonite (iron oxide) concretions.  Such concretions can be tricky, with shapes that appear to be teeth or bones at first glance.

'Those who cannot remember the past are condemned to repeat it.'

George Santayana

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