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sunrise disk in corkstone


HavanaWoody

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HavanaWoody

This block was on a pallet of what was called corkstone  that i bought to use in a pond nearly 20 year's ago,  I used the rest to border my koi pond but this one was too cool to pu into the water.  i had it indoors for many year's  but it got moved outdoors and developed a lot of moss, ,while it still looked cool i recently hit it with a pressure washer  revealing more than had shown  prior and since have become more curious about the center dis and cluster of spines.   this morning I used a little sandblasting to  erode the backside and this is what i have.  I have no way to know were it came from,and suggestions?   is it already too cool to mess with furthermore or do you think there's more to be seen?

 

20200710_123900.jpg

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Fossildude19

Welcome to the Forum. :)

 

Looks like a concretion in the middle of that. 

Neat looking piece, I agree.  :)

 

I'd be interested in seeing the "spines" up close. They may be fossil-related. 

 

I tried to brighten and enlarge yours, but the detail gets washed out. 

20200710_123900.thumb.jpg.f55b11bc62627707fe01ee694a576a16.jpg

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1 hour ago, Fossildude19 said:

Welcome to the Forum. :)

 

Looks like a concretion in the middle of that. 

Neat looking piece, I agree.  :)

 

I'd be interested in seeing the "spines" up close. They may be fossil-related. 

 

I tried to brighten and enlarge yours, but the detail gets washed out. 

20200710_123900.thumb.jpg.f55b11bc62627707fe01ee694a576a16.jpg

I tried as well. Here's my attempt. Any better idea on them?

20200710_123900.jpg.47a2762b5b80d9c061b7e5ab7cc8d514.jpg

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Fossildude19

Almost looks like a cidarid echinoid, but the oval shape is throwing me off, ... unless it is an imprint of 2 in close proximity. 

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There's definitely at least one disarticulated cidarid in there.The spine outlines, and interambulacral plates with bosses, are clear. Mostly or all decalcified, just impressions. :) 

Edited by TqB
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  • 2 weeks later...
HavanaWoody
On 7/10/2020 at 12:55 PM, Fossildude19 said:

Welcome to the Forum. :)

 

Looks like a concretion in the middle of that. 

Neat looking piece, I agree.  :)

 

I'd be interested in seeing the "spines" up close. They may be fossil-related. 

 

I tried to brighten and enlarge yours, but the detail gets washed out. 

20200710_123900.thumb.jpg.f55b11bc62627707fe01ee694a576a16.jpg

I ran out of upload space,  Don't know if It resets  but let me see if I can add the close up of the spines,  they are definitely interesting.

2020-07-20 09.57.59.jpg

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Fossildude19

Phenomenal photo! Thanks for posting that. :) 

I agree with TqB. Looks like the imprint of a disarticulated cidarid echinoid, with spines. B) 

That is very cool. 

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HavanaWoody

Yeah I see, the other images don't do justice, the concretion is lens shaped and sharp

Edges, i wish i had an xray of it.

2020-07-20 10.18.12.jpg

2020-07-20 10.21.28.jpg

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I wonder if it's Carboniferous? That looks as if it could be Archaeocidaris, which I think disarticulates more easily than Mesozoic and later cidarids. It's very beautiful and well worth rescuing from outside, whichever it is! :) 

(At the moment, the concretion is less interesting, though there could be something good inside it…)

Edited by TqB
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17 minutes ago, TqB said:

I wonder if it's Carboniferous? That looks as if it could be Archaeocidaris, which I think disarticulates more easily than Mesozoic and later cidarids. It's very beautiful and well worth rescuing from outside, whichever it is! :) 

(At the moment, the concretion is less interesting, though there could be something good inside it…)

 

Agreed.  This is a Paleozoic cidaroid.

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