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-Andy-

Ammonites from Guanling, Guizhou Province

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-Andy-

Hi all, I recently obtained several lovely ammonites from the late Triassic (Carnian) Xiaowa Formation of Guanling, Guizhou Province

 

However, I lack the expertise to identify them and I was hoping you could help

 

I suspect A is a Trachyceras multituberculatum as this ammonite type is abundant there, and that species is also the most common ammonite there

 

I can't tell what B and C are. I am not even sure if C is a different species from A. From my research, the following species are also present there:

 

Trachyceras cf. aon

Paratrachyceras cf. hofmanni

Paratrachyceras douvillei

Hauerites cf. himalayanus

Protrachyceras sp.

Arctosirenites canadensis

Arctosirenites columbianus

 

P1210521.thumb.jpg.dba17a82777d0a4f1f33dedb7bfa7877.jpg

P1210517.thumb.jpg.9be085824a72184d26630a9ae0b7e134.jpg

P1210524.thumb.jpg.16ea9496e5fd98fd9cd96131e07be302.jpg

 

What do you think?

 

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RJB

I cant help you with ID but I can tell you these little ammo's are very cool!

 

RB

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Runner64

I'm of no help when it comes to ammonites but those are some really cool looking pieces @-Andy-!

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FossilDAWG

Perhaps @andreas or @old digger may be able to help.

 

Those are quite nice ammonites.  I think you are on the right track with the first one, but I do not know the differences between Trachyceras and Paratrachyceras off the top of my head.

 

Don

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-Andy-

Someone on Facebook who seems to know his ammonites identified B as Neoprotrachyceras and C as Trachyceras sp.

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