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sixgill pete

Lee Creek Carcharhinus

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sixgill pete

Okay I have 2 small Carcharhinus teeth from Lee Creek here. The first I am sure is Carcharhinus macloti. The shoulders have multiple cusplets and the blade is non-serrated. On the labial side of the tooth the enamel stops at the root.  

 

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The second tooth has multiple cusplets on the shoulders and on the labial side the enamel is rolled up on the root, as in falciformis. However  falciformis has a serrated main blade, and the blade on this tooth is also non-serrate. Is this also C. macloti, with "extra" enamel? Or possibly a juvenile C. falciformis with undeveloped serrations?

 

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Darktooth

I wish I could help. I just wanted to comment that I have not seen teeth like these before and I find them interesting.

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MarcoSr

Both teeth look like C. macloti to me.  The shoulders of the second tooth don't match C. falciformis.  See examples of extant C. falciformis below:

 

Carcharhinus falciformis (Silky Shark)1 upper jaw A1R Labial view.jpgCarcharhinus falciformis (Silky Shark)1 upper jaw L5R Labial viewa.jpg

 

Marco Sr.

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PaleoRon

The second tooth looks like it may have been swallowed and somewhat eroded by stomach acid.

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sixgill pete

Thanks Marco, your pics of the C. falciformis show the tooth is definitely not that. I think C. macloti is correct. 

 

Ron, woul that have caused the "extra" enamel? Maybe eroded the root to uncover it? 

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