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Is this a tooth of Richardoestesia isosceles?  Scale marks on left side of tooth are in mm and on the right side are in 0.5 mm increments.  Serration count ranges from about 6 to 8 per mm.  What remains of the tooth is approximately 11 mm in length.

 

Hell Creek Formation (Late Cretaceous:  Maastrichtian), South Dakota.

 

20170317_135234-1_1489773649099.thumb.jpg.97b26ee13af368d0ceabd3bb64c5fdb3.jpg

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21 minutes ago, Troodon said:

YES, good call

Thank you, Troodon.  Much appreciated.

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double yes.  I need to get a step ahead of ole troodon on these ones that I actually know. 

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5 minutes ago, jpc said:

double yes.  I need to get a step ahead of ole troodon on these ones that I actually know. 

trex-3420.gif.06e7a9801d6d5b2dff0d08db58c5e9d0.gif

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Susan from PA
2 hours ago, jpc said:

double yes.  I need to get a step ahead of ole troodon on these ones that I actually know. 

He's a quick one!  :ighappy:    

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