Help ID Ammonites from Mexico

[gerardo gonzalez 2]

Friends, I seek help to classify them, I have acquired them over the years without any reference. What I have been able to investigate is that they are from the Kimmeridgiano-Portlandian, probably from the formation "cañon of las lajas" (San Luis Potosí, Mexico) .I look for your name and surname.

 

 

 

[PFOOLEY 1,956]

They are beautiful Ammonites. I cannot help with identification, though I am very interested... I'm sure someone will have some thoughts.

 

Welcome to The Forum.

[abyssunder 5,115]

The first two specimens look like Ochetoceras, maybe O. mexicanum.

I'm sure this older topic may help a little. See discussion there.

 

[Ramon 74]

Hi, those ammonites are probably from the kimmeridgian-thitonian Taman formation, from the southern part of the Mexican state of San Luis Potosí.

 The first two are Ochetoceras probably O.zio

 

I have no clue what the ammonite in the second picture is, @Ludwigia could help.

 

The three ammonites from the third picture are closely related to Ochetoceras.

 

I have no idea what The ammonite in the fourth pic is.

 

I have a specimen similar to the last one, but I have no clue to what it is.

[Ludwigia 3,113]

Sorry, but this fauna is just as foreign to me as it is to you. You'll just have to study the available literature.

[Ramon 74]

The Mexican fauna needs to be studied more. It’s a shame that Mexico’s paleontology isn’t being studied. There are only a handful of resources for researching ammonites from Mexico. 

[gerardo gonzalez 2]

Thank you very much to all those who contributed their comments and suggestions, now I have managed to get closer to their classification.

[Tidgy's Dad 7,097]

5 minutes ago, gerardo gonzalez said:

Thank you very much to all those who contributed their comments and suggestions, now I have managed to get closer to their classification.

Very nice to see some specimens from Mexico. 

They're very interesting. 

[gerardo gonzalez 2]

Greetings to Morocco, any chance of swapping brachiopods from your country?

[Thecosmilia Trichitoma 135]

 

4 hours ago, gerardo gonzalez said:

Greetings to Morocco, any chance of swapping brachiopods from your country?

It is is illegal to export fossils out of Mexico.

[gerardo gonzalez 2]

I'm not selling, much less exporting, I'm looking for help to classify my fossil corals.

[HansTheLoser 83]

@Thecosmilia Trichitoma

 

It is not only forbidden to bring fossils out of the country, it is even prohibided to collect them without having a written permit from the INAH (National History and Anthopology Institute, a Federal Institution). Those permits obtain almost only Mexican Academics that submit a research project to the INAH. I guess it neither promotes sciences much nor it inhibits "illegal" collecting. The country is large and not densely populated. I never met a INAH person at a fossil site protecting it.

 

But, BTW, in Italy, it is almost the same. This is still a law from Mussolini times. No comment.

 

So you may understand why some countries are well represented here, and others not.

 

[Fossildude19 8,149]

2 hours ago, gerardo gonzalez said:

I'm not selling, much less exporting, I'm looking for help to classify my fossil corals.

Please keep the discourse civil.  

The member is a child, and was likely referencing the mention of trading.  

 

[gerardo gonzalez 2]

It is difficult to understand nonsense