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WhodamanHD

Tiny little Mako?

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WhodamanHD

Miocene tooth from a recent Matoaka trip. I realized I didn’t know what it was and I couldn’t let that stand. looks a bit strange but maybe a posterior lower Isurus desori?

.8 inches 

Sorry for bad pictures

83F78C09-9A15-4906-8066-BDBD414383F2.jpeg

5A53E4F0-DDA1-4361-8F0F-AB4344B58207.jpeg

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NSRhunter

Agree with desori

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WhodamanHD
3 hours ago, NSRhunter said:

Agree with desori

Okay then, thanks for the confirmation! 

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MarcoSr
12 hours ago, WhodamanHD said:

Miocene tooth from a recent Matoaka trip. I realized I didn’t know what it was and I couldn’t let that stand. looks a bit strange but maybe a posterior lower Isurus desori?

.8 inches 

Sorry for bad pictures

 

 

 

Your tooth looks like an I. desori.  The tooth has a lot of root erosion but looks like an upper anterior tooth.  Your tooth is definitely not a posterior tooth.  The dentition of I. desori was very similar to that of the exrant I. oxyrinchus.  See below for an extant I. oxyrinchus dentition.

 

http://www.thefossilforum.com/index.php?/topic/59995-extant-isurus-oxyrinchus-mako-shortfin-shark-jaw/

 

Marco Sr.

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