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Can someone help me ID this fossil?


Gilcor

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I tried to ID a fossil I found, but I had no success. I found it along the coast of the Bay of Fundy, close to Moncton, Canada. It says online that the area where the fossil was found is in the late Devonian - late Carboniferous period. Anybody have any idea what this fossil is?

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My first thought was Shark coprolite. But I'm not 100% on board with that assessment. Let's see what others say. 

 

Btw, welcome to the forum.

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My best guess is a horn coral like zaphrentis prolifica, but others will probably be able to give a more confident ID.

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Welcome to the Forum. :) 

 

This looks more geological to me - some sort of iron based concretion. :headscratch:

 

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I can picture it being a lens that got rolled in a current. 

It would be an odd texture for a fossil. 

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I don't think it's a shark coprolite, instead of the classic spiral, it has just a strip in the middle. I think it's geological, very strange though, nice find.

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Happy hunting,

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My first impression is of a fossilized croissant.  That being unlikely, I have to say it does not look like any organism I am familiar with.  Certainly it lacks any structure one would expect of a coral.  Ironstone concretion seems the most reasonable suggestion.

 

There are a number of fossil sites along the Bay of Fundy shoreline.  I have collected many Silurian corals at Quinn Point and Limestone Point.  Somewhere here in the forum there is a thread about a fossil plant site near Bathurst; maybe search for "Bay of Fundy" to find it.  I recall the author was "Redleaf".  There is also an excellent Devonian site in Dalhousie.  I realize these are not particularly near Moncton but they are within striking distance.  I believe there are some sites for Cambrian trilobites near Moncton but I have not visited them.

 

Oh and welcome to the Forum.

 

Don C

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I'm with FossilDAWG, my first thought was a croissant as well.  It is not like any spiral/scroll coprolite I have seen. For lack of a better explanation, I'm in the concretion camp as well. Though, it seems strange that a concretion would form a spiral. Have you thought about prepping it out? 

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If it will be a spiral coprolite, the way how it should be formed would be against the normal process of faeces extrusion, spiralling from one end to the other. If I see correctly, your specimen looks to be spiralling (if it is in that way) from both ends narrowing, somehow symmetrical, to a terminal point from the middle. I don't think it's a coprolite, but, I'm pretty sure that I've seen this kind of pattern somewhere (not in a supermarket as croissant), and I can't remember where. I'm in the geological camp by now, considering it as a geological wonder.

 

Almost looks like a weathered brachiopod.

Edited by abyssunder
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Well, it's not a fossil, but on the bright side it's the worlds only croissant-shaped concretion (: 

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“...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin

Happy hunting,

Mason

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Thanks a lot for the help everyone!! There is a lot of iron based concretions on the cliffs close to where I found it. Some of the pieces you'll see on the cliffs have an outer layer that looks a lot like the one on the croissant, then there's grey matter mixed with some kind of silver flakes, then pyrite & finally wood in the middle that almost looks like coal. On the cliffs you'll find mostly trees & branches. This piece was oddly shaped compared to anything I have ever found so far so I brought it home. I thought of breaking it apart to see if there was anything inside, but I was afraid I'd only find wood & I kind of think it looks nice the way it is. The attached pictures are what you'll typically find in the area.

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1.jpg

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Concretions often form from or around organic material. The original material has been greatly distorted in the process and usually is unrecognizable, but does take a lot of strange shapes.

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2 hours ago, Gilcor said:

The attached pictures are what you'll typically find in the area.

2.jpg

 

 

Nice Liesegang Rings in the first picture. :) 

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1 hour ago, Fossildude19 said:

 

 

 

 

 

Nice Liesegang Rings in the first picture. :) 

 I agree, Tim! :)

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Would these be Liesegang Rings as well? This one I found in the middle of the woods by a brook.

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They are ironstone concretions, some of them (the concentric ones) resembling Liesegang rings .

 

5936dd7d59c6b_concentricironstoneconcretions.thumb.jpg.f7bd6c53a8a64775ef0b6a5aedd76d01.jpg

 

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  • 2 weeks later...

Could these two be similar?

 

On 6/3/2017 at 3:48 AM, abyssunder said:

I'm pretty sure that I've seen this kind of pattern somewhere (not in a supermarket as croissant), and I can't remember where.

Could these two be similar?

IMG_4311.JPG.4ca06677ea1205f0256b4b6b24c0befa.JPG.57ea3fdea1e787bc86d35b27b0463a9e.JPGil_570xN.802481995_j98v.jpg.9fe9bc99f6931f05cec088597be263f2.jpg

" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

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If it's true, it was collected in Monroe County, Indiana. The seller of the item supposed that it could be a geodized crinoid calyx and stem with heavy iron deposits and limonite or sandstone coating. I don't see the geodized crinoid, but I agree with the iron content. :)

 

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" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

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