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Megamouth shark teeth?


Dino9876

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Hello,

 

I see these shark teeth from an auction. I don't know if they are fossilized or come from a recent animal. Unfortunately the photos are not very good.
I still wonder what kind of shark these teeth could have come from. My first idea was Megamouth shark, but teeth of these are of course very rare. On the other hand, it might fit because the teeth are found on Japan's coast and Megamouth sharks are also found there (if there are recent species).
Can you help me with the ID? I'm really not quite sure, I've never seen teeth like this before.

 

Thank you and best regards from Germany.

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i-img1024x768-1594357743aittfd736572.jpg

i-img1024x768-1594357743kglndo736572.jpg

i-img1024x768-1594357743gobdcz736572.jpg

i-img1024x768-1594357743lk5haa736572.jpg

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These look modern to me as well. I can't help much with the ID but I would doubt that these are from a rare species. Being sold in a lot would indicate they likely come from a more common source.

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1 minute ago, Huntonia said:

These look modern to me as well. I can't help much with the ID but I would doubt that these are from a rare species. Being sold in a lot would indicate they likely come from a more common source.

Yes I think the same. I just don't know any comparable species with such teeth. The seller also wrote that he did not know which shark the teeth were from.
Maybe someone else knows what kind they could be. Thanks anyway for your answer :)

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4 hours ago, Coco said:

Hi,

 

Certainly recent and a common genus. If someone can help you : @MarcoSr

 

Coco

 

The teeth are extant Carcharhinidae teeth.  They look like symphyseal teeth.  Carcharhinidae, depending on the species and whether upper or lower symphyseal teeth, can have serrated or unserrated symphyseal teeth.   Definitely not Megamouth teeth.  Below are two 7mm Carcharhinus brevipinna (Spinner Shark)  symphyseal teeth for comparison.

 

 

5f537b5f1748a_Carcharhinusbrevipinna(SpinnerShark)SymphysealLower7mm2.thumb.jpg.fae4731e23270a02e08181700ac4b1c2.jpg

 

5f537b60ee491_Carcharhinusbrevipinna(SpinnerShark)SymphysealLower7mm.thumb.jpg.656dca2406a49876fb571a4c0ed90dc3.jpg

 

5f537b630f0b4_Carcharhinusbrevipinna(SpinnerShark)SymphysealUpper7mm2.thumb.jpg.588495c19d8710b20a5cb90d6e4e6b66.jpg

 

5f537b65428d5_Carcharhinusbrevipinna(SpinnerShark)SymphysealUpper7mm.thumb.jpg.447708962b20e4a4635c97d63cf0c4ed.jpg

 

 

Marco Sr.

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14 minutes ago, MarcoSr said:

 

The teeth are extant Carcharhinidae teeth.  They look like symphyseal teeth.  Carcharhinidae, depending on the species and whether upper or lower symphyseal teeth, can have serrated or unserrated symphyseal teeth.   Definitely not Megamouth teeth.  Below are two 7mm Carcharhinus brevipinna (Spinner Shark)  symphyseal teeth for comparison.

 

 

5f537b5f1748a_Carcharhinusbrevipinna(SpinnerShark)SymphysealLower7mm2.thumb.jpg.fae4731e23270a02e08181700ac4b1c2.jpg

 

5f537b60ee491_Carcharhinusbrevipinna(SpinnerShark)SymphysealLower7mm.thumb.jpg.656dca2406a49876fb571a4c0ed90dc3.jpg

 

5f537b630f0b4_Carcharhinusbrevipinna(SpinnerShark)SymphysealUpper7mm2.thumb.jpg.588495c19d8710b20a5cb90d6e4e6b66.jpg

 

5f537b65428d5_Carcharhinusbrevipinna(SpinnerShark)SymphysealUpper7mm.thumb.jpg.447708962b20e4a4635c97d63cf0c4ed.jpg

 

 

Marco Sr.

Thank you :) 

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Agreed w/ Marco Sr. about these being carcharhinid teeth.

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