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Question about Cowshark teeth


Darktooth

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I have collected a considerable amount of Cowshark teeth, over the years. All have been found in the Calvert Cliffs.These include whole ones and partials. All of the teeth that I have found have the same characteristic except one. The serrations that are on the first blade, are small, stay close to the blade, and follow the contour of the blade going up. Except for one that has larger cusps, that grow out and away from the first blade. I have seen cowshark symphaseals and I know this is not one. But my question is this odd tooth, is it just from a different placement in the jaw,  a pathological tooth, or a different species. Any help would be gladly apprecieted. 1st pic is of the typical teeth. 2nd pic is of tooth in question. Thanks for looking.:)

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The serrations are not typical of the species that I am familiar with.

My first thought is an a1 that was trying to be a symphyseal.

My second thought is a pathologic symphyseal.

Wait for others to reply.

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Will Rogers said: " Some of them didn't spring far enough."

 

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I think your second tooth is a patho. and there is only one Notorynchus species at Calvert.  Over the years I've seen a few teeth similar to yours at the cliffs.

 

 Bill Heim on the elasmo site calls that feature patho symphysio-lateral.  

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19 minutes ago, Troodon said:

Bill Heim on the elasmo site calls that feature patho symphysio-lateral.  

So I finally got one right, sort of.:rofl:

Darwin said: " Man sprang from monkeys."

Will Rogers said: " Some of them didn't spring far enough."

 

My Fossil collection - My Mineral collection

My favorite thread on TFF.

 

 

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25 minutes ago, Troodon said:

I think your second tooth is a patho. and there is only one Notorynchus species at Calvert.  Over the years I've seen a few teeth similar to yours at the cliffs.

 

 Bill Heim on the elasmo site calls that feature patho symphysio-lateral.  

Thanks Troodon, I actually was just on the elasmo site , I didn't see any info mentioning that feature. But then again I was just skimming through it.

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I like Trilo-butts and I cannot lie.

 

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35 minutes ago, ynot said:

The serrations are not typical of the species that I am familiar with.

My first thought is an a1 that was trying to be a symphyseal.

My second thought is a pathologic symphyseal.

Wait for others to reply.

Thanks Tony!

Dipleurawhisperer5.jpg

I like Trilo-butts and I cannot lie.

 

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7 hours ago, Darktooth said:

Thanks Troodon, I actually was just on the elasmo site , I didn't see any info mentioning that feature. But then again I was just skimming through it.

 

It's not under Genera but under Lee Creek fauna "other sharks"  Notorynchus 

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Thanks again for the info. I need to utilize the elasmo site more often.;)

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I like Trilo-butts and I cannot lie.

 

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