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Rappahannock creek hunting


Rowboater

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Recent finds.  February may be a bit warmer than March?    I have two twisted teeth with large bases, which I think could be upper cowshark (but only one point?)  and several small makos, plus "the usual" sand tiger, angel shark, drum "teeth", and gray shark.   Always good to get out!

 

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That one twisted tooth is very interesting.  Could you post some closeup individual pictures of it?  It is probably a pathologic upper cowshark tooth as you stated in your post.

 

 

358939756_Pathologicuppercowsharktooth.thumb.jpg.5617320dbe32cc4706a6578cbbe470ae.jpg

 

 

Marco Sr. 

"Any day that you can fossil hunt is a great day."

My family fossil website     Some Of My Shark, Ray, Fish And Other Micros     My Extant Shark Jaw Collection

image.png.9a941d70fb26446297dbc9dae7bae7ed.png image.png.41c8380882dac648c6131b5bc1377249.png

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@MarcoSr  Sorry for the delay (scanner/printer issues). Not sure any of the scans below improve on the first.  Odd that none of the three recent "upper cowshark" teeth have even a hint of a second point.  One that I was sure was a cow shark seems to have been tipped since I found it, it also had lost much of its root (now just a nondescript tooth).  The much bigger one can stand on its huge root, by far biggest of my upper cowshark teeth.

 

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1 hour ago, Rowboater said:

@MarcoSr  Sorry for the delay (scanner/printer issues). Not sure any of the scans below improve on the first.  Odd that none of the three recent "upper cowshark" teeth have even a hint of a second point.  One that I was sure was a cow shark seems to have been tipped since I found it, it also had lost much of its root (now just a nondescript tooth).  The much bigger one can stand on its huge root, by far biggest of my upper cowshark teeth.

 

 

 

 

The below picture actually shows what I wanted to see.

 

 

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The top two teeth (I don't think the bottom tooth is the same, just broken upper tooth) are cowshark, most likely Notorynchus cepedianus, upper symphyseal/parasymphyseal teeth.  These teeth usually only have a main crown without any cusplets.  See the below extant Notorynchus cepedianus jaw from elasmo.com. 

 

 

1778542291_notorynchuscepedianus-dent.jpg.4112a5eb9fac185376cee36465148643.jpg

 

 

 

Marco Sr.

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"Any day that you can fossil hunt is a great day."

My family fossil website     Some Of My Shark, Ray, Fish And Other Micros     My Extant Shark Jaw Collection

image.png.9a941d70fb26446297dbc9dae7bae7ed.png image.png.41c8380882dac648c6131b5bc1377249.png

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