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Need help to ID a possible fossil found in Post Oak Creek, Sherman, Tx

ThaGr8WiteDope

By ThaGr8WiteDope
in Fossil ID

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ThaGr8WiteDope Newbie

ThaGr8WiteDope

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My son found this last week while poking around Post Oak Creek in Sherman Tx. The bumps and ridges on the sides are symmetrical, and it has a smooth hollowed out portion. Not sure if it’s part of a fossil or just an odd rock formation. Hoping someone here can help us out. Thanks!!

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daves64 Regular Member

daves64

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Looks to be an ammonite living chamber.

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Accomplishing the impossible means only that the boss will add it to your regular duties.

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JohnJ Regular Member

JohnJ

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Dave is right; it is part of an ammonite.  The rough projections are the remains of ammonite chamber sutures.  Since other sutures are not obvious in the piece, it is most likely the steinkern of the living chamber. 

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The human mind has the ability to believe anything is true.  -  JJ

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