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DAg

Help identifying this fossil

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DAg

Hi,

We have located this fossil in our home marble floor - the marble variety is Crema Marfil (origin Spain).  Is this a Trilobite?

fossil.jpg

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Fossildude19

Hello, and Welcome to the Forum. :) 


I'm pretty sure it isn't a trilobite.  

It looks more like a coral in cross section, to me. 

Maybe some others will weigh in. 

Regards,

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TqB

I agree it's a coral, next to a gastropod section.

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FossilDudeCO

I could be wrong here, but Marble is a metamorphic rock, so it should not contain any fossils.

If your flooring is made of a limestone material (which marble metamorphosis from) you could potentially have a fossil hidden in there!

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TqB

The term "marble" is used loosely in the trade. I agree there's little or no metamorphism to that piece. 

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oilshale

Crema Marfil from Monte Coto is an Eocene limestone. Much too young for trilobites.

I agree, corals and gastropodes

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fifbrindacier

I also see a cross section of gastropod and of coral.

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DAg

Thanks for all your replies! Is there a way to estimate how old these sections may be?

 

On the question of whether this is a marble and on the possibility of presence of fossils, here's what the internet threw up:

 

"Crema Marfil Commercial: this is a light-beige yellowish coloured marble, with uniform background. It presents several irregular vein, some calcite and may present strong signs of fossils. This is the commercial type of the Crema Marfil, with large supply but also demand."

 

 

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doushantuo

Crema marfil is a "strongly consolidated limestone".It is probaly Paleogene(eocene?),as nummulites* are found in it .

*In the generic sense of the word,hence not italicized

Geological details are scant to nonexistent,BTW.

A very large quarry seems to be located in Spain.

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abyssunder

Nice scleractinian coral ! :)

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erose

Marble often represents very low grade metamorphism so although the limestone gets a bit cooked it doesn't obliterate the fossils. Sometimes we see fossils that were stretched or deformed in very hard shales on their way to becoming slate.

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fifbrindacier

In a river near my house i found cross-sections of rudists in stones that look like a marble of the area.

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tmaier

fifbrindacier, if these are decent sized stones, you could take some to a local stone or tile worker and ask them to cut one in half. It would only take a couple minutes, and they would likely buzz it through the masonary saw for free. It will look rough because it isn't polished, but when wet you might see a lot of detail. Then you might find somebody to polish it for free. =-)

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DAg

This discussion has been most informative! I am attaching one more picture from the same marble floor. Wondering if this is just a snail shell fossil or a backbone??

3.jpg

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Fossildude19

If you are referring to this item:

 

3.jpg.49095dfd947791f4b96b4272cc472338.jpg

 

I think a high spired snail. If it is indeed Eocene in age.

If it was older, I would say orthocone cephalopod.

Not a vertebral column. 

Regards,

 

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Guguita2104

Hi!

I think that one is a gastropod,as well.

Regards,

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fifbrindacier
On 30 novembre 2016 at 2:39 PM, tmaier said:

fifbrindacier, if these are decent sized stones, you could take some to a local stone or tile worker and ask them to cut one in half. It would only take a couple minutes, and they would likely buzz it through the masonary saw for free. It will look rough because it isn't polished, but when wet you might see a lot of detail. Then you might find somebody to polish it for free. =-)

That's what i did, i went to my club to cut one and then i polished one part, i had to glue the other part because it had broken.PC030215.JPG

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