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Some SC Threshers/Benedinis? for ID


Meganeura

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On 7/12/2023 at 1:42 AM, Meganeura said:

Recently picked up a small handful of Thresher shark teeth from South Carolina - there’s 3 I’m not sure on the ID of. 
 

First is this one - which was labeled as P. benedini - measures just over 1”/3.25cm

IMG_1927.thumb.jpeg.fcf4a89ba7d8ea55eb4c752072286140.jpegIMG_1928.thumb.jpeg.e95cb492ff829c89e72c141e6f11bdce.jpegIMG_1929.thumb.jpeg.ae5442df6a43f84424744357836ef46f.jpeg
 

The second - thinking A. Grandis? Also just over 1”.

IMG_1930.thumb.jpeg.c2548928232da83da0e4caa98072b4cd.jpegIMG_1931.thumb.jpeg.3919f38266e91c3d5992e18593e2b24b.jpegIMG_1932.thumb.jpeg.450bec06048da7a948834d4d867eeb43.jpeg

 

And finally - forgot to take more pics of this one, but it’s closer to C. Planus, which I don’t believe exists in SC, so I’m not sure what it is. Person I got it from confirmed they found it themselves - also just over 1”.

IMG_1937.thumb.jpeg.905a01cd09cf250cc83fdeaac0c5bfdd.jpeg

 

@Al Dente @hemipristis @Shellseeker Any help would be appreciated!

 

I like Parotodus for the first, and A. grandis for the second.  

 

The third is tricky.  I'm thinking Isurus retroflexus  lateral based upon the thin, translucent edges of the blade, the labial root protrusion, and the lingual root "shelf" (faint though it is)

Edited by hemipristis
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