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Possibly a fossil? In limestone


Alice K

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So I took a small rock from Vojak peak of Ucka (Uchka) mountain in Croatia. Later I noticed interesting (well, it's interesting to me, since I know close to nothing about fossils) shape on it.

I wonder is it a fossil at all and if it is, what was it fossilized there?

 

The rock is limestone:

http://www.pp-ucka.hr/en/natural-heritage/geology/

 

I would appreciate your help in identifying it.   

PC310714.JPG

PC310726.JPG

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1 minute ago, westcoast said:

Yes it is a fossil..but not sure what it is. 

Thank you. I wasn't sure if it is, let alone what it is, so I'm happy for now. 

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Welcome to the Forum ! :)
I would say it is a rudist lower valve in longitudinal section view, embedded in the limestone matrix, similar to the one represented in Figure. 6/e.

 

PC310726.JPG.8f5ec005f9649aa5c8fad19265e8e118.JPGCJES45-04-SkeltonClassification.jpg

excerpt from Skelton, P. W. 2013. Rudist classification for the revised Bivalvia volumes of the ‘Treatise on Invertebrate Paleontology.’ Caribbean Journal of Earth Science, volume 45, 9-33.

 

Nice find, BTW !

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7 minutes ago, abyssunder said:

Welcome to the Forum ! :)
I would say it is a rudist lower valve in longitudinal section view, embedded in the limestone matrix, similar to the one represented in Figure. 6/e.

 

PC310726.JPG.8f5ec005f9649aa5c8fad19265e8e118.JPGCJES45-04-SkeltonClassification.jpg

 

Nice find, BTW !

Thank you! 

Wow, rudist... you just gave me work to do, like I said I knew nothing of fossils and now I simply have to look it up at least a little :)

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