Freshwater Plesiosaur from Southern China

[Alston Gee]

Hi everyone,

 

I recently traveled to Southern China and noticed some local fossil dealers listing a few “freshwater plesiosaur” teeth originally acquired from the Ziliujing Formation in the Sichuan Basin. I searched online and found that crocodyliforms also appeared in the same region, including Teleosauridae indet. (still unsure how teleosaurus could survive in freshwater), Sunosuchus shunanensis, and Hsisosuchus dashanpuensis.

 

I am having a hard time distinguishing between teleosaurus and plesiosaur teeth. Can anyone help me identify the following teeth? They could be Teleosaurus, freshwater plesiosaur, or something else. I will also attach screenshots of the new, unidentified freshwater plesiosaur teeth from the Xintiangou Formation in the Sichuan Basin to this post for comparison.

 

 

@pachy-pleuro-whatnot-odon

[Alston Gee]

Here are some photos of the above fourth and fifth teeth. @pachy-pleuro-whatnot-odon Alex, what’s your thoughts on these teeth? 
 

 

 

Edited Friday at 03:26 PM by Alston Gee

[Alston Gee]

Here are photos of another tooth that I believed was a crocodile tooth because of its fine striation (still unsure though).

@pachy-pleuro-whatnot-odon

 

Edited Friday at 03:26 PM by Alston Gee

[Alston Gee]

The geological age of these teeth was from Early-Mid Jurassic.

[Alston Gee]

On 6/28/2024 at 12:43 PM, Alston Gee said:

Hi everyone,

 

I recently traveled to Southern China and noticed some local fossil dealers listing a few “freshwater plesiosaur” teeth originally acquired from the Ziliujing Formation in the Sichuan Basin. I searched online and found that crocodyliforms also appeared in the same region, including Teleosauridae indet. (still unsure how teleosaurus could survive in freshwater), Sunosuchus shunanensis, and Hsisosuchus dashanpuensis.

 

I am having a hard time distinguishing between teleosaurus and plesiosaur teeth. Can anyone help me identify the following teeth? They could be Teleosaurus, freshwater plesiosaur, or something else. I will also attach screenshots of the new, unidentified freshwater plesiosaur teeth from the Xintiangou Formation in the Sichuan Basin to this post for comparison.

 

 

@pachy-pleuro-whatnot-odon

The correct locality of these fossils should be Xintiangou Formation instead of Ziliujing Formation.