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 I found this Ptychodus marginalis on a sandbar on a river this spring after a large flood. The river cuts through the lower Smoky Hill Chalk of Northwest Kansas. After I picked it up, I asked myself "is this real?" It is!!!  54mm across. 

marginalis.jpg

marginalis2.jpg

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That is a monster tooth!

Congratulations on a wonderful find.

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Awesome!

That is a big tooth!

Thanks for posting it! :) 

 

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Wowser...that is one heck of a Ptychodus tooth!

 

Can you imagine a pavement of those things?...that's a big shark!

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Uhhh, that's the biggest Texas Ptychodus I've ever seen though the late Boneman007 claimed to have seen a tooth that was at least 125mm.  He didn't have a photo but he didn't come across as a teller of tall tales.  I've heard of specimens in Europe in the 60-80mm range (see Welton and Farish, 1993: p. 65).

 

The thing about big Ptychodus like that is they tend to be cracked (weathering from being near or at the surface) as I see in that specimen.  I have a partial crown that appears to have been about 50mm wide when complete.  It broke mostly horizontally before it was collected.  I would soak that tooth in a Paraloid solution or whatever has been the best consolidant for large teeth in that deposit.

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