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Large And/or Unusual Teeth?


Haizahnjager

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On 7/23/2018 at 6:10 PM, Bone guy said:

Ill throw in my two cents just to revive this topic a bit. Here's a unique shark tooth from Lee Creek, NC. It looks pretty normal; serrations are nice, color is a cool blue. But the root is missing. I had to do a double take when I recovered this from the matrix. 

 

Does anybody know what may have caused this? 

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The root is likely just rotted away, separated from the enamel. It also happens when the root shrinks, same result.  

We find many shark teeth like this in STH deposits.

  • I found this Informative 1

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On 7/23/2018 at 5:07 PM, siteseer said:

 

Just in case someone is looking for posts about this sawfish, I am bumping this thread it with the correct spelling, Schizorhiza.  This is a sawfish better known from Morocco and Niger (presumably other parts of Africa as well).

 

 

Uh oh.  I just went through this thread again and noticed something I overlooked last week.  Harry had already commented on it with more background.  He deserves an "informative" for that one and I deserve an extra half-hour after school to pick up my reading comprehension.  I'm glad I bumped the thread, though.  It's a good spot to show some oddball teeth.

 

Jess

 

 

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  • 4 weeks later...

Hi,

 

On 24/07/2018 at 3:10 AM, Bone guy said:

Ill throw in my two cents just to revive this topic a bit. Here's a unique shark tooth from Lee Creek, NC. It looks pretty normal; serrations are nice, color is a cool blue. But the root is missing. I had to do a double take when I recovered this from the matrix. 

 

Does anybody know what may have caused this? 

IMG_1049.JPG

IMG_1050.JPG

In recent shark jaws we can see that the last rows of teeth still have no made roots. For me it is about a not yet totally formed tooth, it was situated on a not visible row on the alive shark. On the fresh jaw of a current shark, we see some rows of teeth, those which are of use to it to seize its preys, but behind jaws, the last rows are hidden under a gingival tissue because they are in formation. It is under this part of skin that these not formed teeth are situated.

 

Coco

 

----------------------
OUTIL POUR MESURER VOS FOSSILES : ici

Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici
Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici
Mâchoires sélaciennes récentes : ici
Hétérodontiques et sélaciens : ici
Oeufs sélaciens récents : ici
Otolithes de poissons récents ! ici

Un Greg...

Badges-IPFOTH.jpg.f4a8635cda47a3cc506743a8aabce700.jpg Badges-MOTM.jpg.461001e1a9db5dc29ca1c07a041a1a86.jpg

 

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