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MarielleK

Reptile fossil. What is it, and is it real?

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MarielleK

Hello everyone! So this fossil is being sold in the U.S. as part of an estate. It is labeled as compsognathus, but I am certain that it is not. It looks to me like some sort of marine reptile out of China. So I am wondering what it is, and if it is genuine. Thank you! 

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rfarrar

This looks to me to be a Brazilian Mesosaurus or Stereosternum skeleton. It would be Permian, from the Irati formation. This is one of the best known continental-drift fossils, with specimens found in South Africa and Brazil.

Bob

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oilshale

Yep - Mesosaurus or Stereosternum from Brazil.

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LordTrilobite

I agree, looks like a Mesosaur.

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MarielleK

Thank you all for the ID! Does this look like a good example of a fossil of this kind? Is it completely genuine? 

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rfarrar

This looks like a typical example. The skull is not very well preserved. The hind legs seem to be missing. The sacral vertebrate, just to the skull side of the break are preserved torso-ventrally. The tail, on the other side of the break is preserved in lateral aspect. It is possible that the tail was a composite piece added on, but that is very difficult to tell from photos. If the layering of the rock match on the two sides of the break, it is probably not composited, but if they don't match it is likely.

Bob

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jdp

Yeah, I think this is probably Mesosaurus.

 

Worth noting that you can't find these on the market much anymore because export has been banned and is tightly enforced by Brazil. If you want one of these, old estate sales are probably the only way to get them.

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FossilDAWG

When my wife brings me along to estate sales, I never ever see anything like this.  It's almost always porcelain tea cups, beanie babies, or elves on shelves.  Maybe fossil collectors in Georgia never pass away?

 

Don

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Pemphix
On 23.8.2019 at 6:49 PM, rfarrar said:

This looks to me to be a Brazilian Mesosaurus or Stereosternum skeleton. It would be Permian, from the Irati formation. This is one of the best known continental-drift fossils, with specimens found in South Africa and Brazil.

Bob

Exact. 

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caldigger
On 8/23/2019 at 6:08 PM, FossilDAWG said:

When my wife brings me along to estate sales, I never ever see anything like this.  It's almost always porcelain tea cups, beanie babies, or elves on shelves.  Maybe fossil collectors in Georgia never pass away?

 

Don

My dilemma exactly. None if the estate sales I have been to are from people that collected "rocks".

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