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Big Brook


Sancerre

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Dear all,

I would like to submit three artifacts from the Big Brook site that some of you know so well.

1)
The first is most likely a concretion. however, on one side, there is a regular cut with a circular end section. I have no particular idea.

2)
The second artifact could be a theropod tooth, with a elliptical cross-section. In this hypothesis we distinguish quite clearly the crown base at the cervix, with the dentine layer.
On another image, we can see worn denticles in (presumed) mesial view, but the outermost enamel layer is very corroded and the dental layer is missing in some places.

3)
Tooth fragment (?). If so, note the pulp cavity (?)


Thank you all for your invaluable comments.
I am of course at your disposal for other photographs.
Best,
Sancerre

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Sorry. I fear you have joined the concretion collecting club of the brooks. It's always a good idea to wait for other opinions though.

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I agree, these are concretions that are very prevalent in the NJ streams. 

    Tim    -  VETERAN SHALE SPLITTER

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"In every walk with nature one receives far more than he seeks."

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I agree with the others that all three are concretions, but as a general rule, if it looks like it could be something pick it up, you never know when you pass up a great fossil thinking that it's just a weird rock. I would encourage you to continue that practice as it may eventually prove fruitful, the brook tumbles stones and fossils alike, a mosasaur or dinosaur bone may be heavily worn, but still absolutely be worth collecting (especially from this area where they are not as common).

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Thank you very much for your very valuable comments and comments, which I obviously agree with.
I also picked up a small piece that looks like the spongy body of a fossil bone, with a small piece of the surface. I will send you a photo very quickly.
Thanks again to each of you!

Sancerre

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Despite no fossils (this time), I would like to commend you on taking some good pictures with scale.:dinothumb: Keep it up, you'll get one soon enough!

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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?

 

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Dear all,

So here is, as I said, what looks like a bone (spongy body) and another artifact, for which I have nothing to offer.

Many thanks

and thank you for your kind words on the scale photos5e6a955a17238_IMG_1997-copie.thumb.jpg.6230a263b70fa3a0633a5b2c549e8f34.jpg5e6a955b49250_IMG_1998-copie.thumb.jpg.2c98f53cebf2c17767e726addd78e315.jpg5e6a955c746d9_IMG_1999-copie.thumb.jpg.aa7da6180b5c8557e111400e65f2010f.jpg5e6a955df0750_IMG_2001-copie.thumb.jpg.922c7bd9deb6329e7db474c189a12608.jpg !

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Sorry, again. Doesn't look like you have fossils there either. I've seen that spongy stuff in the brooks before and I actually think it's some kind of industrial slag.

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Many thanks for your feedback. Here are other photos, perhaps more precise. It doesn't look like a foundry slag, but it can be another waste !

5e6aa39b0509b_Capturedecran2020-03-12a16_59_55.thumb.jpg.0a06f6b70f8725a749ba4646d08b6f36.jpg5e6aa39bdf504_Capturedecran2020-03-12a16_59_47.jpg.3c318ffdf02ac4b864b8a1fe300908d3.jpg5e6aa39ce2c14_Capturedecran2020-03-12a16_59_39.thumb.jpg.f02d4456a2470ad293167fbfda2328b1.jpg

 

 

 

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1 hour ago, Sancerre said:

It doesn't look like a foundry slag, but it can be another waste !

I agree that it doesn't appear to be the typical iron slag. My guess would be something coal related. The spherical shapes are seen in turtle bone, but I agree with @Carl. The size distribution is wrong for bone.

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Thank you !
we can nevertheless find compable matrices, with a fibrolamellar bone architecture. Here Ankylosaurus.

Best !

Capture d’écran 2020-03-12 à 19.42.43.png

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