Partial Dinosaur claw found at Charmouth, Dorset

[Wildbones]

Any help with an ID on this find from Charmouth please? 

 

Found amongst a cliff fall of mudstone.

 

I've never seen the irredescent sheen on anything but fossil shells before, so it feels a bit special. I've only ever found really found Ammonites and Belemnites before at Charmouth.

 

Any thoughts? Paleontology was not my strongest subject in my geology degree so any keen eyes, I'd love to know what it may have once belonged to. Found on my birthday too 🦖

 

Thanks!

[Fossildude19]

Sorry, this does not look like bone to me. 

Maybe a partial bivalve steinkern?

[Wildbones]

Thanks Tim. I am now convinced it is not bone, like you. Further research, I think it might be part of the rarer ammonite Oxynoticeras lymense.  The infill shape on cross section is very similar to the image d. In link below. 

 

The cliff fall may have included Stonebarrow Pyritic Member, as I also found a good number of perfect pyritic ammonites.

 

What do you/others think? 🧐 

 

Leigh-Ann 

 

https://www.researchgate.net/figure/Asteroceratidae-and-Schlotheimiidae-Scale-bar-5-cm-Note-different-scale-for-e-f-k_fig3_353043626

[debivort]

a piece of ammonite whorl is what I was thinking.