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bone or sponge


Gen. et sp. indet.

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Gen. et sp. indet.

Silicified specimen from Jurassic/Cretaceous/Paleogene marine sediments of Małopolska region, Poland. From secondary deposit, so precise age and locality unknown. Similar to a humerus, e.g. of a turtle. Or is just a sponge?

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Do you have a magnifying glass or a loupe you can hold up to the camera so we could get a closer up photo? If so take photos of the ends.

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Macrophyseter

If its a fossil, then I'd say bone. It doesn't seem porous enough to be a sponge to me.

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fifbrindacier

Could you hammer that crack, maybe more of it could be shown, and take photos of all the faces ?

If it's a fossil and if it's Jurassic or Cretaceous, it could be a worn piece of Rudist shell, sometimes their shape look like bone.

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