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Chippewa

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Chippewa

Okay, any help with this is much appreciated.  I'm inclined to write this one off as something insignificant or perhaps even a rock.  However, the symmetry makes me think it is something more than that and drives me to consult the enthusiasts and experts here.  If it weren't for a small broken section (most noticeable on the "front view" picture) and an area of attached matrix (most noticeable on the lower left of the "bottom view" picture), this item would be almost perfectly symmetrical.  There are even two small depressions evenly spaced, one on each side, facing the viewer on the "front view" picture.

 

The dimensions are just under 3.5 inches wide (would be just under 4 inches if complete), 1 3/4 inches deep, and 1 inch tall


 Please let me know if you need more info or pictures or anything else.  Thank you.  

top view.jpeg

front view.jpeg

bottom view.jpeg

back view.jpeg

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ynot

Looks like a typical concretion to Me, no fossil there.

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WhodamanHD

I agree, not a fossil but always good to be sure!

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abyssunder

Although I want it to resemble a crab, I'm not finding the right evidence for it. :)

 

_5a88e1a9375ea_bottomview.jpeg.d9abfae65277666c8af6cba6cae487c7.thumb.jpg.893c26b229a6b6b27a93dea48787577d.jpg9882081_1.thumb.jpg.b25d32130830d735eaea748abd744558.jpg

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Arizona Chris

Formation? type of rock?  Looks like a basalt squeeze out to me.

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Plantguy

Hmm, thats got an interesting shape. I can see why the others have proposed other possibilities. Was thinking badly worn bulla but it seems to have some folding and I've seen too many things lately that I formerly thought were just rocks and am now finding out that they were actually coprolites..so..... put me down for a maybe coprolite... I wonder what it looks like on a microscopic scale..

 

Take a look at the variety of shapes and forms here...

http://www.poozeum.com/coprolites.html

 

Regards, Chris

 

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oldtimer

My first thought was a coprolite. Second pic made me think crab.

I still lean to a coprolite but it could be what the others suggested too.

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JohnBrewer

Certainly looks the shape a coprolite may have been deposited @GeschWhat @Carl

 

15 hours ago, abyssunder said:

Although I want it to resemble a crab, I'm not finding the right evidence for it. :)

 

_5a88e1a9375ea_bottomview.jpeg.d9abfae65277666c8af6cba6cae487c7.thumb.jpg.893c26b229a6b6b27a93dea48787577d.jpg9882081_1.thumb.jpg.b25d32130830d735eaea748abd744558.jpg

 

@abyssunder are they really crabs in the two lower images?!

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GeschWhat

Did you find this in Florida? If so, a fecal origin is good possibility. Can I see a photo of the broken end?

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abyssunder
1 hour ago, JohnBrewer said:

 

@abyssunder are they really crabs in the two lower images?!

I don't know.  Looks real. I picked up the image from an internet sale site. It was listed as petrified ghost crab fossil, from Florida. :)

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Chippewa

Thanks much everyone for your ideas/inputs.  Those ghost crab fossils are cool!  And thanks for the poozeum site!

I'm content with coprolite - my first...

 

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Txfossilmom

I found several similar looking objects recently in a spillway in central texas and wondered about the weight of what you found? Did it seem unusually light for its size? All the things I found I expected to be tar by first glance but they were rock solid various different shapes some more turd shaped and some more pile like but with a lighter more pumice weight to it.  I'll try to get pictures of themv later. 

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GeschWhat
1 minute ago, Txfossilmom said:

I found several similar looking objects recently in a spillway in central texas and wondered about the weight of what you found? Did it seem unusually light for its size? All the things I found I expected to be tar by first glance but they were rock solid various different shapes some more turd shaped and some more pile like but with a lighter more pumice weight to it.  I'll try to get pictures of themv later. 

Coprolites are not usually light weight, but they can be somewhat porous in that you might see tiny air bubbles escape if you place them in water.

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M Harvey

Here's a thought.  I have seen phosphate nodules that have nucleated around organic material from the Ripley formation, Alabama.  For some reason, crabs are frequently the core.  The nodules themselves have no detailed structure but often superficially resemble the encrusted core.   

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Plax

am in the possible crab concretion camp

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MeargleSchmeargl
On 2/17/2018 at 9:27 PM, Chippewa said:

Okay, any help with this is much appreciated.  I'm inclined to write this one off as something insignificant or perhaps even a rock.  However, the symmetry makes me think it is something more than that and drives me to consult the enthusiasts and experts here.  If it weren't for a small broken section (most noticeable on the "front view" picture) and an area of attached matrix (most noticeable on the lower left of the "bottom view" picture), this item would be almost perfectly symmetrical.  There are even two small depressions evenly spaced, one on each side, facing the viewer on the "front view" picture.

 

The dimensions are just under 3.5 inches wide (would be just under 4 inches if complete), 1 3/4 inches deep, and 1 inch tall


 Please let me know if you need more info or pictures or anything else.  Thank you.  

top view.jpeg

front view.jpeg

bottom view.jpeg

back view.jpeg

Geological to me. 

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Carl

I can see that as a coprolite but it would really need some up close scrutiny to be more certain.

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