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Ted37

Potomac shark teeth Rock

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Ted37

Went to look for shark teeth the other day on the potomac, md side. Found small teeth, and also a rock that looks interesting. Has some crystal or something on it. Any one have any ideas?

IMG_20190105_181754957.jpg

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Ted37

Another pic, it kind of looks like from a turtle. But, I am leaning toward a rock with some crystal formation on it.

IMG_20190105_182002881.jpg

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digit

Looks like a bunch of Sand Tiger shark teeth. I was lucky enough to do some fossil hunting along the Potomac last year and this seems to be a common type of shark tooth from the Aquia Formation. Likely not turtle shell though I can see how the resemblance would lead you to that idea. I know that there is also a lot of fossilized shell material found in the area. You have the item in hand so maybe you can check closer and see if there are any indications of layering that might indicate part of a shell buried in matrix. If that does not seem to be the case, then my guess would be a crack in the rock that was infilled with a silica-rich material leading to a glassy later like that.

 

Love the shark teeth.

 

Cheers.

 

-Ken

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caldigger

Your "rock" looks like maybe oyster steinkern with some of the shell material still attached.

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PaleoNoel

Agreed, appears to be some oyster shell and matrix.

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Ted37

Newbie question,  after reading the replies. So I may have an actual Oyster shell fossil that is wrapped around a rock?  Or it is possible the entire piece may be a fossil?  Or it could just be a rock with some crystal. I attached one more pic.

IMG_20190105_181840064.jpg

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Littlefoot

I had no clue what a steinkern was until I joined this site! The people here know their stuff!

 

I have some similar steinkerns of shells from Purse State Park, but not oyster shells. I especially like yours with the beautiful oyster shell coloring and the peek inside the rock area! That's a nice find! 

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