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njenthusiast

Possible Thoracosaurus (crocodile) Scute? - Big Brook NJ

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njenthusiast

This was found in Big Brook NJ. It looks most similar to this Thoracosaurus neocesariensis scute on: http://www.njfossils.net/crocodile.html

Could it be? It is very light and shell-like. About 2cm x 2cm. 

 

YYRzj1F.jpg

sb8BDat.jpg

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erose

Ten bucks on man made.  Well, not really. I mean I don’t have ten bucks to bet on anything. But if I did have ten bucks....

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njenthusiast
Just now, erose said:

Ten bucks on man made.  Well, not really. I mean I don’t have ten bucks to bet on anything. But if I did have ten bucks....

haha what sort of man-made thing could it be though? The only man-made things I've found in Big Brook are forgotten sunglasses and flip-flops - oh and glass shards :o

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jdp

Looks like gravel in acrylic or something like that. I agree on man-made.

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Rockwood
5 hours ago, njenthusiast said:

what sort of man-made thing could it be though?

An adhesive cement like used on ceramic tile.

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FossilDAWG

It is a piece of shell that has been almost completely bored by Chione sponges.

 

Don

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Rockwood
4 hours ago, FossilDAWG said:

It is a piece of shell that has been almost completely bored by Chione sponges.

 

Don

You're sure now ? @erose might just come up with a saw buck. :)

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JohnBrewer
8 hours ago, Rockwood said:

An adhesive cement like used on ceramic tile.

That gets my vote. 

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The Jersey Devil

It isn’t a Croc osteoderm or anything Cliona/Clam bored, so yeah, man made.

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Carl

I'm with @FossilDAWG on this one. That looks way more like a bit of Cliona-bored oyster than anything manmade I've seen.

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Rockwood

This is getting deep.

What kind of shell would it be ? The texture has too many tiny pores that seem to be isolated like bubbles in cement to me. 

The shapes look too much like attached pneu structures to have been coincidentally bored by sponges as well. 

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El_Hueso

I think it's the back that is making people like myself think it's man made. The section I highlighted looks to me like adhesive or paint when it settles down on a pain pan from the hardware store.

plaster.png

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Scylla
On 8/11/2019 at 10:44 PM, njenthusiast said:

haha what sort of man-made thing could it be though? The only man-made things I've found in Big Brook are forgotten sunglasses and flip-flops - oh and glass shards :o

I once found a colonial era jar near there. Didn't know what it was and left it on a tree. After I got home we found a picture of an almost identical example. The boys had quite a laugh at my expense.

 

Once found a shovel scoop there in the stream. I used it for fossil hunting for about two years then lost it at Brownie's Beach in Calvert Cliffs.

 

I have seen native American arrow heads that came from Big Brook too.

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The Jersey Devil

Definitely isn’t Cliona, completely wrong texture and pattern seen in first pic.

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Rockwood

Here is a more detailed explanation of how I see it forming.

One or both surfaces has the cement spread  on it with a trowel of some sort. This process introduces many small/tiny bubbles. The two surfaces are pressed together trapping some air bubbles which act as nucleoli for the next step. For what ever reason (warping, settling, uneven surface) the gap then expands, the somewhat elastic cement being pulled into the attached pneu structure seen here.

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frankh8147

I don't know guys but it looks like cliona to me too...add some stream action (or weather) to those borings and you get some cool patterns..  here is one on an Exogyra.

IMG_20190813_195034.jpg

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frankh8147

And this one looks unusual too.. you are correct though @Rockwood this is getting deep haha!

IMG_20190813_195546.jpg

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Rockwood
16 minutes ago, frankh8147 said:

some cool patterns.

Cool maybe, but no pneu. That structure still needs to be explained.

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frankh8147
5 minutes ago, Rockwood said:

Cool maybe, but no pneu. That structure still needs to be explained.

Hmmmm... how about something like this, worn down a little more.

IMG_20190813_205738.jpg

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Rockwood

:shakehead:

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Nirang
On 2019-08-12 at 4:43 AM, Rockwood said:

An adhesive cement like used on ceramic tile.

lol I HATE man made....especially cement....sometimes it looks REALLY NEAT heheh

IMG_4994.JPG

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Nirang
2 hours ago, frankh8147 said:

I don't know guys but it looks like cliona to me too...add some stream action (or weather) to those borings and you get some cool patterns..  here is one on an Exogyra.

IMG_20190813_195034.jpg

Yeah I have quite the exogera collection and I think I might concur. River wash can make some interesting things and also make identification hard, sooo many things I've found like that but can't prove it 

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njenthusiast

Haha wow this thread really got going! Yes there were lots of shells like that lying around in the mud/silt so I think it is highly likely its a fragment instead. 

Gotta go back and find a real croc scute :P

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The Jersey Devil

The color and shine of the Exogyra that Frank posted is very different from the piece in question. It doesn’t give off any shine, is tan, and also the pattern is too even.

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El_Hueso
8 hours ago, The Jersey Devil said:

The color and shine of the Exogyra that Frank posted is very different from the piece in question. It doesn’t give off any shine, is tan, and also the pattern is too even.

I concur. It just solidifies my opinion that the piece in question is some hard plaster or something... 

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