help me identify this fossil?

[aquigley770]

Hi all, I recently found this on a trip to the Jurassic Coast at Dorset and have been intrigued by this find, i'm not an expert on fossil identification and i would be grateful for all your potential ideas as to what this could be.

[Miocene_Mason]

I still say belemnite, guard not phragmacone. Some are partially hollow.

[TqB]

Which end of the Jurassic Coast and what size is it? An end view of the wide end would be useful too. 

It doesn't look like a belemnite, especially not any of the Lias belemnites from the Lyme/Charmouth area. 

[aquigley770]

1 hour ago, TqB said:

Which end of the Jurassic Coast and what size is it? An end view of the wide end would be useful too. 

It doesn't look like a belemnite, especially not any of the Lias belemnites from the Lyme/Charmouth area. 

It was found at Kimmeridge, approximately 4cm in length with a piece broken off the narrow end it also has a slight curvature to it, I’ll post a picture from that perspective for you soon, I appreciate it guys! 

[aquigley770]

Here are some extra photographs

[TqB]

Thanks, those are helpful. 

 

I'm not sure but it could be the end of a Pinna - type bivalve. (Look up "Pinna fossil" otherwise you get lots of ears...  )

 

[aquigley770]

Yes I can see why you’ve made that comparison, an interesting suggestion thank you! 

[FossilDAWG]

I'm in agreement with Pinna.

 

Don

[abyssunder]

I also agree with Tarquin. Pinna (if not quite that) - like bivalve would be a good possibility. As far as I can see, the celluloprismatic layer structure, in the transverse view of the specimen, is visible. (It will be nice to see a polished transverse cut in high-resolution, for further reference.)

 

excerpt from J.-P. Cuif et al. 2012. Layered Growth and Crystallization in Calcareous Biominerals: Impact of Structural and Chemical Evidence on Two Major Concepts in Invertebrate Biomineralization Studies. Minerals 2(1): 11-39.

open access

[Darko]

Nice find

[aquigley770]

20 minutes ago, abyssunder said:

I also agree with Tarquin. Pinna (if not quite that) - like bivalve would be a good possibility. As far as I can see, the celluloprismatic layer structure, in the transverse view of the specimen, is visible. (It will be nice to see a polished transverse cut in high-resolution, for further reference.)

 

excerpt from J.-P. Cuif et al. 2012. Layered Growth and Crystallization in Calcareous Biominerals: Impact of Structural and Chemical Evidence on Two Major Concepts in Invertebrate Biomineralization Studies. Minerals 2(1): 11-39.

open access

Fantastic information this is very much appreciated my friend! 

11 minutes ago, Darko said:

Nice find

Thanks @Darko I’ll be sure to keep posting further finds in the future!