Brahimsamba:

Yes, it is an Ammonite, but nothing more can be said owing to the lack of details seen on the image.

Best

Syed

Thanks Syed,

Yes I know that it's very hard to determine this specimen. I will just know that this morphology can be related to Kimmeridgian ammonites. In hope to find better preserved specimen on the field.

All the best

Brahimsamba

I am pure micropaleontologist

please consult Prof. Jai Krishana who working on Ammonites from Kutch basin, India

You can also consult prof. Ettachfini Mohsine (Cadi Ayyad university, Marrakesh, morocco) who working on ammonites from morocco.

Thanks a lot for yours suggestions,

But I know that it's hard to determine ammonite with internal part. I want just confirm a Kimmeridgian age. I returned on the field, And I found other ammonites print which can help you:

I found 2 ammonites prints and one belemnite

Thanks a lot Luc,

It's a pleasure to have some news of you. Yes I know, It's very damage because this surface (probably a condensed surface) is plenty of belemnites and ammonites, even large specimen of 20 cm. Unfortunately the dolomitization and the bad preservation give us bad material... You which work on the area, did you have some publication on Upper Jurassic of the area of Saint-Vallier du Thiez?

Thanks a lot,

Cheers

Thanks a lot!!! :) I will return on the field soon, and I will prospect in hope to find better material!!!

To be continued...

based on the conch shape visible in the first image you posted, oppeliid sounds like a reasonable assumption. I agree with Luc that the ribbed ones are perisphinctids...

The first ammonite with smooth shell is strongly resembling Neochetoceras of the Kimmeridgian-Tithonian age; among the ammonite photos added later there is a piece of heteromorph Protancyloceras (photo in lower right corner), ranged through Tithonian-Berriasian; piece of perisphinctoid ammonite with evolute coiling and mainly biplicate ribbing is close to many taxa, as there is a very common feature among the Late Jurassic ammonoids

perhaps the right key to classify the first ammonites is the sutural line. But I'm sorry I cannot say more.

The first ammonite looks to me like Neochetoceras (Kimmeridgian-Tithonian) - I'm with Mikhail on that one. However, the level of preservation doesn't help!