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-Andy-

Is this a plesiosaur or pterosaur tooth?

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-Andy-

Hi all, I was recently offered this tooth from late Cretaceous of Orensburg, Russia. Most likely Gaisky City District.

 

I can't figure out if it's a Polycotylid plesiosaur or Pterosaur tooth. The overall shape is closer to pterosaur than plesiosaur. However, I am not aware of pterosaur having wrinkling like that, nor do I know of pterosaur teeth being found there.

 

What are your thoughts on this? Thank you.

06.jpg

05.jpg

04.jpg

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RuMert

Taking into account that Gay quarry features marine fauna remains, its 99% plesiosaur

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Rockwood
1 minute ago, RuMert said:

Taking into account that Gai quarry features marine fauna remains, its 99% plesiosaur

Isn't that a bit strong, considering the percentage of pterosaurs that were piscivorous ?

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RuMert

Ulyanovsk region, where I used to collect, is the same Tethys ocean, albeit earlier - abundant ichthyosaur and plesiosaur remains, but only a couple of pterosaurs in 200 years. So 99 to 1 is a good bet I guess:)

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Rockwood

Off shore too far perhaps ?

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Randyw
32 minutes ago, RuMert said:

only a couple of pterosaurs

But they have been found there. So it does happen... my vote is for pterosaur..is the base oval? If I’m not mistaken pterosaurs are oval and plesiosaur are more round...

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dinosaur man

Looks like pterosaur 

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-Andy-

Interesting... My Russian contact says it's a Polycotylid plesiosaur. My friend who collects Polycotylid skulls also said this tooth matches the teeth on his

 

However, my friend who digs in Kem Kem said it's a pterosaur tooth based on the morphology, another friend who collects marine reptile and pterosaur teeth said the same.

 

Guess I will have to get more pics once it arrives

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Rockwood

Perhaps an example of one sees what one knows ?

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Troodon

I dont have answers but...

Primarily a Marine Locality..

How many Pterosaur teeth have that type of ornimatation? Have not seen any..

How many Russian Plesiosaurs teeth have striations? Lots and typical 

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-Andy-
On 28/10/2019 at 7:35 PM, Troodon said:

I dont have answers but...

Primarily a Marine Locality..

How many Pterosaur teeth have that type of ornimatation? Have not seen any..

How many Russian Plesiosaurs teeth have striations? Lots and typical 

 

I agree with you in general. Playing devil's advocate though, there are some Kem Kem pterosaurs with this striation as well

pterosaur 1.jpg

pterosaur 2.jpg

pterosaur 3.jpg

pterosaur 4.PNG

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Troodon

Thanks did not know.

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Anomotodon

Agreed, looks like an Elasmosaurid because of the degree of labio-lingual compression. Great tooth, Andy!

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Randyw

Now that we can see the base I agree elasmosaurid.

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