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Ichthyosaur or pliosaur?


Per Christian

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Came across this tooth, the location is: Severst Sandstone Formation

 Volga River Region, Russia  

 Late Jurassic 145 Mya.

 

The striations tells me it's ichthyosaur, but the root looks pliosaur to me, do I'm curious. What do people here think? It's 34 mm long 

 

@pachy-pleuro-whatnot-odon

Screenshot_20220924-075936.png

Screenshot_20220924-075921.png

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Folded enamel, so ichthyosaur. The condition with the root derives from the fact that it's rather worn. But overall it does conform to the root shape seen in other platypterygiine ichthyosaurs:

 

Platypterygius_tooth_with_root_2.jpg.e15904cae2b9e7403cd07ef4205796cc.jpg

  • I found this Informative 1

'There's nothing like millions of years of really frustrating trial and error to give a species moral fibre and, in some cases, backbone' -- Terry Pratchett

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