New here and have a few questions about something I found.

[Geaxuce]

Hello, I'm new to here and I have a few questions about something I found at least 15 years ago. I found it in middle America, if memory serves, in a rock garden outside of a building somewhere. It seems to be sediment of the inside of an oyster or a mussel? I don't have an eye for this. In any case, I've taken a few photos of it showing it's shape and size. There is mother of pearl still stuck to it as well as what I believe to be it's old muscle or flesh of some kind that's been fossilized, excuse me if my terminology isn't correct. It's pinkish(colorblind) and is fibrous and what I believe might be a small amethyst stuck in the sediment. My questions are, what is it and if it's possible that there's something in the sediment. Like a pearl or something. I'd rather not break it open in case there isn't anything. I figured that people who are more interested and more knowledgeable than I am could know something about it or lead me to someone who might. Thank you and I appreciate your time! :)

 

[Rockwood]

This is an Inoceramid bivalve. They are found in Kansas, Texas and likely other states in that area. That's pretty mid America. I doubt that pearls are often found in them though. The western interior seaway had a chalky bottom in most places. 

[Mahnmut]

Hello and welcome to the forum!

Nice bivalve steinkern. I wonder if the blue spot is a mineral though, its not amethyst. May be the fossil got hit by something blue that left a mark. If not, that would be some unusual mineral, its an intense blue in case you cannot tell.

Best Regards,

J

[Fossildude19]

I see calcitic shell material, rather than soft tissue. But bivalve internal cast is a good ID.