Nautilus Fossil

I like your nautile and your trilobites.

1 hour ago, fifbrindacier said:

I like your nautile and your trilobites.

 

Thank you!  I've had the trilos for a while but I just got the nautilus..  Super excited to post it on here..  

That is a really nice Nautaloid.  Where did you get it from?  And also do you have any idea what the yellow mineral is?  The one that looks like it could be the sutures?

I actually got it from a small town in South Dakota called Hill City...   Not really sure what the yellow material is, I've actually done a little bit of research online and have narrowed it down to a couple of different minerals.

I could imagine that the yellow is calcite colored by iron.