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Found today in Portugal


Tiago

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Hello all,

 

I found this fossil today at Portugal, Lisbon district, about 270 meters high.

 

Anyone knows what it is?

 

Thanks for your help.

 

Best regards

 

IMG-20210221-WA0014.jpgIMG-20210221-WA0009.jpgIMG-20210221-WA0010.jpgIMG-20210221-WA0011.jpg

 

IMG-20210221-WA0008.jpg

 

IMG-20210221-WA0005.jpgIMG-20210221-WA0007.jpgIMG-20210221-WA0006.jpgIMG-20210221-WA0013.jpgIMG-20210221-WA0012.jpg

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I think it must be a heteromorph ammonite that had been encrusted by bivalves.

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Another option is a gastropod.  I say that because it looks like it tapers to me and in some of the pictures I believe I see the columella on the inside.  It would be a big snail, that for sure!  Any idea on the age of the rock?

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I agree this is a gastropod, i also see the columella.

theme-celtique.png.bbc4d5765974b5daba0607d157eecfed.png.7c09081f292875c94595c562a862958c.png

"On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry)

"We only well see with the heart, the essential is invisible for the eyes."

 

In memory of Doren

photo-thumb-12286.jpg.878620deab804c0e4e53f3eab4625b4c.jpg

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3 hours ago, fifbrindacier said:

i also see the columella.

In the center of the object, or the object is, the columella ?

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5 hours ago, Rockwood said:

In the center of the object, or the object is, the columella ?

The center part of a coiled gastropod is called the columella. You usually can’t see it except when a shell is broken open (as is the case here), although it also extends from the bottom of the shell in those forms with a siphonal canal. See the illustration below that I borrowed from the Geological Museum of Trinity College in Dublin website. The columella is circled in red.  I believe the specimen in question is a portion of a gastropod with the columella exposed in a couple of places. 

 

D28DB91E-F5C3-4806-B64E-81F6AE15264C.thumb.jpeg.7ef6114c64eeff6213cfa1f44856eeff.jpeg

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1 hour ago, ClearLake said:

 I believe the specimen in question is a portion of a gastropod with the columella exposed in a couple of places. 

Yes. It probably is. I did notice the likely spiral shape, but I couldn't find one at the time.

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Campanile?

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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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5 hours ago, abyssunder said:

Campanile?

According to its size, that would fit.

theme-celtique.png.bbc4d5765974b5daba0607d157eecfed.png.7c09081f292875c94595c562a862958c.png

"On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry)

"We only well see with the heart, the essential is invisible for the eyes."

 

In memory of Doren

photo-thumb-12286.jpg.878620deab804c0e4e53f3eab4625b4c.jpg

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