I'm sorry, I don't know, but what an interesting rock... what is the name of formation and its age?
the name of this formation is a limestone
age: lower Callovian
Hello, the ammonite is not very well preserved, so this is hard to give you a "strong" answer. If this is Callovian, the shape remember me something like Phyllopachyceras abrayi...
Lower Callovian clarifies it - its a Macrocephalites (although in Europe they do range from the late Bathonian to the earliest Mid Callovian - but are only generally common in the L Callovian). Compressed fine ribbed is unfortunately a very general morphology which persists throughout most of this range - do you have a view of the other side which might be better preserved?? and also do you have any associated fauna which could help tie down the actual zone/subzone - you could always email pictures directly to me on [email protected] if that's useful?!
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