Unidentified crystalized Brachiopod

[ziggycardon]

Hi everyone! 

A few months ago I recieved this little brachiopod with crystalization on the inside, it was a nice piece which came very cheap. 
Unfortunatly there was no information on this piece, no ID, no location and no age. All I know is that it came from an old collection and that the previous owner had lot's of fossils from Scandinavia & Germany. 

The matrix in very soft limestone, comparable to the Maastrichtian limestone from my region, I know similar limestone formations can be found in the UK, France, Denmark & Germany, to name a few. 
So I was wondering whether anyone can give more information on this piece, I know it's hard to ID something when no information is available, but maybe someone has a piece similar to this or knows the species when he sees it?

Thanks in advance! 

 

[Tidgy's Dad]

 As you suspected this is going to be near to impossible to identify..

It's clearly a terebratulid but without far more accurate details of origin will be pretty hard to pinpoint. 

[Shamalama]

I wonder if it might be a Gibbithyris semiglobosa from the chalk at Ault, France?  Here is one that I have in my collection that I received from @nala as part of an exchange:   https://viewsofthemahantango.blogspot.com/2011/08/gibbithyris-semiglobosa.html 

[ziggycardon]

18 hours ago, Tidgy's Dad said:

 As you suspected this is going to be near to impossible to identify..

It's clearly a terebratulid but without far more accurate details of origin will be pretty hard to pinpoint. 

Yeah, I expected as much,

3 hours ago, Shamalama said:

I wonder if it might be a Gibbithyris semiglobosa from the chalk at Ault, France?  Here is one that I have in my collection that I received from @nala as part of an exchange:   https://viewsofthemahantango.blogspot.com/2011/08/gibbithyris-semiglobosa.html 

Yes thank you, it does indeed look an awfull lot like the one I have, also in the same matrix. 
So Gibbithyris semiglobosa from the chalk at Ault in France could be an option. 
Other species I've found that look like the one I have and that are found in a similar limestone matrix are: 

Carneithyris subcardinalis which can be found in Møn in Denmark and in the limestone quarries that are part of the formation of Maastricht & Gulpen near my location. 
and Kingena elegans which can be found in Fécamp in France.

So I am guessing it could be one of them, but like @Tidgy's Dad says, I think it will be impossible to pin point an exact species without knowing the exact location where it was found. 

 

But given that all the species that I've found that look similar and that are preserved in the same limestone date back to the Cretaceous, I think it's safe to say that the one I have in hands also dates back to that period.

But thank you for all the help!  

[Tidgy's Dad]

1 hour ago, ziggycardon said:

Yeah, I expected as much,

Yes thank you, it does indeed look an awfull lot like the one I have, also in the same matrix. 
So Gibbithyris semiglobosa from the chalk at Ault in France could be an option. 
Other species I've found that look like the one I have and that are found in a similar limestone matrix are: 

Carneithyris subcardinalis which can be found in Møn in Denmark and in the limestone quarries that are part of the formation of Maastricht & Gulpen near my location. 
and Kingena elegans which can be found in Fécamp in France.

So I am guessing it could be one of them, but like @Tidgy's Dad says, I think it will be impossible to pin point an exact species without knowing the exact location where it was found. 

 

But given that all the species that I've found that look similar and that are preserved in the same limestone date back to the Cretaceous, I think it's safe to say that the one I have in hands also dates back to that period.

But thank you for all the help!  

Nice summing up. 

It could be Gibbithyris, but there are many other possibilities. 

As you say, without a precise location, many terebratulids and rhynchonellids from the Cretaceous are impossible to differentiate without details of the interior. 

But Late Cretaceous is pretty likely. 

[Shamalama]

19 hours ago, ziggycardon said:

Yeah, I expected as much,

Yes thank you, it does indeed look an awfull lot like the one I have, also in the same matrix. 
So Gibbithyris semiglobosa from the chalk at Ault in France could be an option. 
Other species I've found that look like the one I have and that are found in a similar limestone matrix are: 

Carneithyris subcardinalis which can be found in Møn in Denmark and in the limestone quarries that are part of the formation of Maastricht & Gulpen near my location. 
and Kingena elegans which can be found in Fécamp in France.

So I am guessing it could be one of them, but like @Tidgy's Dad says, I think it will be impossible to pin point an exact species without knowing the exact location where it was found. 

 

But given that all the species that I've found that look similar and that are preserved in the same limestone date back to the Cretaceous, I think it's safe to say that the one I have in hands also dates back to that period.

But thank you for all the help!  

Agreed. Without the exact locality information you will likely never know the true name of that fossil. All of those possibilities look similar but your specimen is already broken open so you might be able to see enough of the interior to compare it to others. That might be a pathway that leads to a genus at least.