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Hi Gary
That's a concretion of a type generally known as a septarian nodule (also colloquially known as "turtle stones" because of the resemblance to turtles):
http://en.wikipedia.org/wiki/Septari...an_concretions
If you google the term you will see lots of similar examples (the Wiki page only shows one that has been split open). It's a natural geological form, but not a fossil.
Here's one from the UK Natural History Museum blog:
I keep six honest serving-men (they taught me all I knew); Their names are What and Why and When and How and Where and Who.
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painshill wrote:
Hi Gary
That's a concretion of a type generally known as a septarian nodule (also colloquially known as "turtle stones" because of the resemblance to turtles):
http://en.wikipedia.org/wiki/Septari...an_concretions
If you google the term you will see lots of similar examples (the Wiki page only shows one that has been split open). It's a natural geological form, but not a fossil.
Here's one from the UK Natural History Museum blog:
[ATTACH=CONFIG]n219894[/ATTACH]
a concretion. Maybe someday. Thanks again.
GarySouth Dakota
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