Devonian Fish?

[Crazyhen]

This specimen is from Quqing of Yunnan Province, China.  Devonian period.  Any idea if it is a placodermi?

 

[Hugh Mongous]

To my untrained eye this looks a bit like the shell of a horseshoe crab or some related crab species. Bear in mind, very untrained eye.

Hopefully some one else with a keener eye can shed a light on it. I'm curious!

 

 

Edited July 31, 2020 by Hugh Mongous

[JimB88]

hmmm..Im not seeing any texture that reminds me of bone. Most of the placoderm armor plates had some. as it was bone and had blood vessel, etc.

[Natalie81]

Do you see any bone texture? Or can you provide us some close ups and a pic from aside? 

[Crazyhen]

I have only acquired this photo at the moment.  No one there knows what it is or if it is a fossil or geological formation.

[abyssunder]

I think it's a geological formation rather than a fossil. It looks to have a symmetry, but I'm not sure of that.

[Crazyhen]

Could it be the last but two segment of a Pterygotus?  It looks similar.

[Rockwood]

Do you have the counterpart ? Something tells me that a significant amount of information is there.

[Crazyhen]

15 minutes ago, Rockwood said:

Do you have the counterpart ? Something tells me that a significant amount of information is there.

Unfortunately only this is left.

[Rockwood]

Isn't placoderm armor arranged in layers corresponding to the dermis ? Endoderm layer ?

[Crazyhen]

Someone advised that it should be the last segment of a Pterygotus.  Seems that Pterygotus is not common in China.

  

[Natalie81]

11 hours ago, Crazyhen said:

Someone advised that it should be the last segment of a Pterygotus.  Seems that Pterygotus is not common in China.

  

Looks like you found it! 

[MrBones]

On 7/31/2020 at 9:35 AM, JimB88 said:

hmmm..Im not seeing any texture that reminds me of bone. Most of the placoderm armor plates had some. as it was bone and had blood vessel, etc.

That's a rather impressive piece! Any idea if it is a cast, or an original?

[JimB88]

22 minutes ago, MrBones said:

That's a rather impressive piece! Any idea if it is a cast, or an original?

Not sure, its just a random image from Google.