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Tusk fragment? Florida


Cthulhu2

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If there are no Schreger lines visible in the transverse section, then is not a proboscidean tusk fragment, but the lines are only in the tusk dentin, not in the cementum (constituent of the outer layer of the tusk), so they are not helpful in this case.

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1 hour ago, abyssunder said:

If there are no Schreger lines visible in the transverse section, then is not a proboscidean tusk fragment, but the lines are only in the tusk dentin, not in the cementum (constituent of the outer layer of the tusk), so they are not helpful in this case.

Yeah, I have a few dentin chunks with the lines in them and given the appearance of this one I imagine it is the actual tusk surface. 

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