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Potomac river Virginia fossil ID help


Northern Neck

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Guys any help on these would be great.  2 are some sort of black shell fossils?  The other appears to maybe be a jaw bone? You can see it's missing a few teeth maybe.  Just never found these before so curious what they might be.  Thanks in advance.

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The shells are internal casts of gastropods, something similar to a Conus or Cowrie/Olive shell. 

Cropped and brightened:

 

IMG_20210324_120749.jpg.9006f8b94164ac2e39f2b22920bcfa0e.jpg

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I think it may be a piece of crocodile jaw. I'm probably wrong though 

Edited by Fossil_finder_
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Hi northern neck! For reference, here are two drum jaw fragments from that location.. I think yours is something different?

F07ABB20-6BA9-4D98-A304-C2EA66A341D4.jpeg

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@Northern Neck can we get better more in focus pictures of the first item. Read some of the pinned topics on how to get your Fossil ID'd for some photography tips. Don't hold the item in your hand so it is the central focus of the picture.

I do think it may be a piece of jaw bone.

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7 hours ago, Fossil_finder_ said:

I think it may be a piece of crocodile jaw. I'm probably wrong though 

As I also posted in the trip report, looks like a fish jaw.  (I have a complete one from Calvert Cliffs.)

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12 hours ago, cck said:

Hi northern neck! For reference, here are two drum jaw fragments from that location.. I think yours is something different?

F07ABB20-6BA9-4D98-A304-C2EA66A341D4.jpeg

 They are from a drum, and represent pharyngeal sections from the throat of a black drum (Pogonius sp.). It is molluscivorous and swallows oysters and clams, crushing them in its pharyngeal plates. Its dentary has sturdy, grasping teeth.  

 

.The piece in question is a dentary, probably from a red drum (Sciaenops ocellatus), which is the jaw photo that you posted in the field trip report.

Edited by hemipristis

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