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496 Views 5 Replies Last post: Nov 23, 2013 8:15 AM by Dan RSS
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Nov 22, 2013 7:28 PM

Gem grade otodus obliquus tooth?

Hi,

 

 

I recently bought this otodus obliquus tooth of the internet.  It has both of the cusps, the whole root an the whole tip.  The size is a 7cm slant.  I have seen some teeth that are almost 4 inches, but they weren't as good quality.

 

 

Is this gem grade tooth or is it just an A grade tooth?

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    Nov 22, 2013 9:10 PM (in response to Dan)
    Re: Gem grade otodus obliquus tooth?

    Hi Dan

    I once came across a shark tooth site on the internet and they had a grading system.

    I have got a new computer because I lost everything on my last one so for what I can remember they had a sort of checklist, first is it worn anywere? are the tips of the tooth intact? are the serations down the sides all there? is it cracked? also colour and size mattered.

    I think it was an American site that sold some very big teeth ie over 6in but they cost more that £1000 and that was a while ago.

    I think your specimen is one of the best for its size but I do not know how big Otodus teeth get to.

    Very nice.

     

    Tabfish

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    Nov 22, 2013 10:34 PM (in response to Dan)
    Re: Gem grade otodus obliquus tooth?

    Yeah, that is a good specimen. No damage (on the visible side anyway), it is not worn and all of it looks genuine so I would be happy to call it an A-Grade tooth.

     

    Generally the root is more fragile than the crown of the tooth because it is not only made up of weaker material, but it has not got a nice solid bit of enamel type substance to hold it together! Regarding chalk teeth, the roots are very fragile; hence it is best to keep them on matrix. The majority of teeth (around 9 out of 10) are missing the root due to bacterial attack or them being dissolved away not getting preserved.

     

    Two photos, one of a perfect specimen (A-Grade like your Otodus), the other is of a few "junk" teeth which are missing the roots.

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